(play the OST at 6:17)

Last time on "The Gamdustri Heroes" 

The CPUs went on their way to zune waste plant, were they ended up getting kidnapped. The riders went up to save untill they stood upon a rider.

*Showing the footage of Game 3*

Hiiro: Who are you?

 Tsukasa: I'm a just rider who's passing though. *fast forward to decade attacking riders* Remember that.

*Fast forward to genm gets killed off*

Poppy: Kuroto!

Decade: Now, where were we?

*Now showing the footage of Game 3.5*

Tsukasa: *showing the footage of decade drop the rider gahats towards emu then kicks him* Bring your other friends with you.

Hiiro: That's not going to happened!

*fast forward towards the of Game 3.5*

Parado: There is another way that we can save them.

Emu: You mean-

Parado: Yeah. The Mighty Brothers XX. That we can supass decade.

*END FOOTAGE OF GAME 3 & 3.5*

(End OST)

Leanbox Basilcom

Histoire: "What's this all about, IF-san?"

IF contacted Histoire to give a situation report on the CPUs, who had been captured. She filled her in about what happened, from their departure until the moment Hiiro told them to leave.

IF: "I'm not exactly sure, but they somehow sealed the powers of the goddesses."

Histoire: "Can you explain in more detail?"

IF: "That's all I know. My guess is it's an item of some sort. Could you look into it for us, Lady Histoire?"

Histoire: "Certainly, but it'll take me three days."

IF: "As soon as possible, please."

Histoire: "I'll see what I can do. Anyway, Nepgear-san and the gang should return to Planeptune. I believe it would be better for Uni-san and the others to go back home too. Goodbye."

She cut the connection. 

IF told the gang, "Well, you heard her–"

Uni: "Hold on! Do you seriously expect us to just go home because she said so? Give us a proper explanation!"

Ram: "Usually, Onee-chan would knock baddies out in one blow!" Ram followed.

Rom: "Is she gonna die?" Rom added.

Compa: "I-I'm sure she'll be fine," Compa reassured.

Uni: "But I heard something about 'sealing their powers' earlier," Uni argued.

Nepgear: "I'm sorry,"

Nepgear, who was silent since she arrived, said out of the blue.

Compa: "It's not your fault, Gear-chan," Compa tried to comfort her.

Nepgear: "Yes, it is. The rock I picked up back when we were shopping, I'm sure that's the item which drained their powers. If only I had thought more carefully about why I felt dizzy back then... If only I had told Onee-chan and the others about it..."

Uni: "You idiot! My sister is really strong, but because of you, she's...YOU should've taken her place instead!"

Then she ran off. Nepgear sobbed, blaming herself. The Riders arrive with bruises and blood on their faces and arms as Uni ran passed them. IF, Compa and the Lowee twins notice them as they quickly approach the riders.

Rom and Ram:"Onii-chan, where's Onee-chan?" 

asked the twins to Hiiro, who didn't respond but to look down on the floor. Everyone began to notice that Kuroto-shin and Poppy aren't with them.

Compa: "Emu, where's Poppy and Kuroto?" Compa asked the gaming intern.

Emu: "P-Poppy.....was kidnapped by Kamen Rider Decade and Kuroto....died." Emu answered causing all of them to gasp. 

Parado and Emu notice that Nepgear is crying.

Parado: Why is Nepgear crying?

IF: It's Uni. She accused Nepgear because rock she picked up back when we were shopping, she says that's the item which drained their powers.

Parado's expression became serious as he looked back to Emu telling him that they need to talk to her. Emu nod as he and Parado stood up and went after Uni. While they are chasing after Uni, Parado possesed Emu and outside is Uni.

Emu: Uni!

The latter looks back and gasp.

Uni: Emu.......

Emu: Why did you blame Nepgear?

Uni looks down in anger as she clenched her fists.

Uni: It's her fault......SHE SHOULD'VE TAKEN ONEE-CHAN'S PLACE WHEN SHE KNEW THAT ROCK THAT SHE PICKED UP DRAINED THEIR POWERS!

Emu: I told you. If we could save your sister.......WE WOULD! BUT DON'T PUT THE BLAME ON NEPGEAR! I know that it's her fault, but I also know that she didn't mean it!

Uni could only look down to the ground in guilt.

Back inside the Basillicom

Kiriya: Welp, there goes the mighty brothers. 

Kiriya looked at Nepgear.

Kiriya went nepgear and crouched down to on nepgear's level.

Kiriya: Hey.

Nepgear lifted her head to kiriya.

Kiriya: I know you say that it's your fault, we know. But as for emu here....He know's that you didn't mean it.

Nepgear: Huh?

Kiriya: You see, not only Emu, but parado too. But mostly Emu. Besides, he always gets the job done when others are in needed.

Rom: Really?

Kiriya: Well we are talking about Emu here y'know.

Ram: I wanna hear too!

Kiriya: Well get comfty. Because going tell you how I met emu.

Back with Emu and Uni.

Uni: Emu?

Emu: Yes?

Uni: Before we go back..... I want to say I'm sorry.

Emu closes his eyes as he looks down

Emu: I'm not the person you should apologize, Uni.....He looks back to Uni but his eyes glowed/changed into red.

Emu: It's Nepgear.

Uni's eyes widen in shock that she saw Emu's eyes glowed/changed red. Emu seem to notice her reaction.

Emu: Something wrong?

Uni: Oh nothing.

Emu: Okay...then.

Emu turns around as he started to walk back to the Basillicom.

Emu: Let's get back to the others.Uni could only sigh as she looked back to the ground.

Uni: 'His eyes change just now...'

Later, Nepgear was on the balcony once more. She was stargazing in the moonless night when a certain group approached her.

Uni: "Nepgear-chan."

Emu: "Come on."

Uni: "I know, just stop pushing me."

She turned around and saw the other CPU Candidates, and the other Riders, the girls went to her while the men stood on the sidelines.

Rom: "Let's make up," 

Rom offered her hand. She took it, along with Ram and Uni.

Uni: "I went too far, I'm sorry."

Nepgear: "Don't be."

Uni: "I know, I know it's not your fault. Yet I..." she began tearing up.

Nepgear: "Yeah, and I know haw you feel."

She hugged her, easing her sadness. The sun rose, and everyone present looked at the beautiful scenery.

Uni: "I thought there couldn't be anyone stronger than my sister. That everything would be fine as long as she was around."

Nepgear: "I'm the same. I can't do anything without my sister either," 

Uni: "But still, we have no idea what to do."

Ram: "It's simple! We just need to save them!"

Rom: "I want to save them too,"

Uni: "But we can't transform..."

Ram: "Then we just need to change that!"

Nepgear: "Let's learn how to do it."The twins were already excited about the idea.

Uni: "Onee-chan said something about how I can't transform because I subconsciously limiting myself, Like the things we're scared about are holding us back."

???: "I have the solution," 

The candidates looked back to only see the remaining Riders/ Rider Guardians.

Nepgear: "What is it?"  

Hiiro: "In one of our first encounters, we need to surpass Decade, because he's a Rider who can use/copy our abilities. You should do that too."

Nepgear: "Be stronger?"

Taiga: "Be stronger than your sisters, or at least the thought of it."

Ram: "Then let's train our butts off!" 

The next day, IF and Compa was looking for the Candidates. She found them, along with Riders, training with Vert's VR battle simulator.

IF: "This is Lady Vert's game, isn't it?" 

They stopped sparring and Nepgear spoke up,

Nepgear: "We figured we'd get some combat training done."

Uni: "Remember how she said that there was a combat simulation mode?"

Parado: "We decided to help, taking the role of the enemy, I figure that if we fight them in human form, they'll have experience facing humanoid opponents, which in turn help them against other types."

Taiga: "Plus, it can help them transform," 

IF: "We're facing against someone who already captured the goddesses,"

Nepgear: "Even so, I believe we have to do this, we've inherited the power of the CPUs, too."

Emu: "Hey, don't leave us out of the action,"

Leanbox Basilicom 

 Nepgear sparred with Hiiro in a sword-fight. At the beginning, it was an even match, but soon the odds were stacked against her. Hiiro sidestepped an overhead slash and countered with a strike of his sword's spine.The Planeptune CPU Candidate fell on her face. 

 Hiiro: "You're improving. Next time, don't put all of your power in a lunge." 

 Getting up, she replie.  

Nepgear: "Understood!" 

 With Uni, she practiced her shooting, mentored by Taiga. The former had her signature rifle, while the latter a Gashacon Magnum. Both of them shot some monsters generated by the VR game. 

 Uni: "How could you shoot them from this far with a handgun?" 

 Taiga: "Experience, obviously. As for the weapon itself, it allows me to do this." 

 He demonstrated by approaching a group and shot them at close range. He shot to his left, then his right, his backside, and spun on his heel and shot the monster in front of him. She awed at his confidence every time he pulled the trigger. 

 Taiga: "Remember, focus on your target and be sure that you can hit it." 

 The Lowee Candidates faced against Emu and Parado themselves. Both duos contrasted in fighting style. The twins were magic users, while the Riders were close range fighters. They did have some trouble with teamwork, but eventually got the hang of it. 

Rom: "Ram-chan, do it!" She acted as a sentinel, casting a shield to protect her from any attack. 

Ram: "Got it!" she cast an ice spell, blasting the Riders back. 

 Parado: "You're getting better at this," 

 Emu: "I envy you two, You never stepped into battle, but you work together really well."

 Ram: "It's the sister factor."

 IF and Kiriya decided to have a hand-to-hand combat training. Before they began, she took off her oversized jacket. They started their mock battle. Block after block, strike after strike, they didn't stop until their stamina ran out. When it did, they collapsed on their backs, panting and breathing heavily.

IF: "That was..." 

Kiriya: "Exhausting..." 

 The others were also done with their training, also tired. Soon after, Compa gave an update on the goddesses. 

 Compa: "Ai-chan! Terrible news!" 

 She gave her the smartphone and was shocked on what was displayed. It was a picture of Purple Heart tied up in a... peculiar position. Kiriya could only just sigh to the pic. 

 IF: "Everyone, gather up!" 

 They went to her, wondering what was going on. She showed the picture, and Nepgear wasn't too comfortable seeing her sister like that. Even Parado and Emu. 

IF: "News of the four goddesses' capture will spread like wildfire." 

 Nepgear: "We can't even transform yet," 

 Hiiro: "There's no time. If the public saw these pictures, it might lead to a Share crash. When that happens..." 

 Nepgear: "We'll receive less power from the Share Crystals." 

 Uni: "That means we need to save our sisters before this gets in the way," 

 Taiga: "Yes, but let's rest for the time being. We'll set out tonight," 

 That night, they set off for Zune. IF rode her bike along with Nepgear, Compa drove a red topless car with the other Candidates and the Rider riding the carriage/Bakusou Bike.  

Zune Waste Plant 

 The black liquid had accumulated quite a lot. It would take time for it to rise to critical levels, but every second passed meant their impending doom was getting closer and closer. 

 Neptune: "Chin up, girls! We're fine right now and there's still hope for us," Neptune tried to cheer them up.

Noire: "I don't usually mind your optimism, but it gets really annoying at times like these,"  

Blanc: "You're trying to escape from reality," 

 Neptune: "I'm just saying, it's better than thinking we're doomed." 

 Blanc: "False hope never did anyone any good." 

Vert: "I don't think it's false hope at all," 

 Neptune: "Nepu?" 

 Blanc: "Eh?" 

 Vert: "Have you forgotten about your sisters?" 

 Noire: "Uni? She's never fought without me by her side." 

 Blanc: "Rom and Ram are still at an age where I have to keep them safe, too." 

 Neptune:"Nepgear seems level-headed, but she's quite spoiled. I think it would be too much for her." 

 Poppy: Don't worry guys! I'm sure Emu-kun and others helped them! The older sisters pondered over his words. 

Their train of thought was broken when Pirachu reported, 

 Pirachu: "They're here. As expected, the CPU Candidate came back with friends." 

 Arfoire: "What can they do?" 

 Pirachu: "They probably can't reach this place, don't you think?" Back with the gang, they arrived at the site. Compa was worried of the Candidates' current state. 

 Compa: "They still can't transform yet." 

 IF: "It doesn't matter if the goddesses fail,"

Compa: "People will come to terms with it of their sisters give it their all. That will reduce the damage done to the Shares." 

 Hiiro: "You're being pessimistic, I'm sure that they can do it. I believe in them." He walked to the Candidates and heard Uni saying, 

 Uni: "Ready?" 

 Taiga: "Wait, something's coming..." 

 As Taiga says that, a familiar purple pipe appeared. The CPU Candidates and IF and Compa could only tilt their heads in confusion, but the Riders didn't seem to be fazed becausethey knew what will happen next. 

 Riders and Canide: A purple.....pipe?"

All the girls said in unison as they yelp when they saw something....or rather someone jumped out from the said pipe and land right in front of them. Once the said figure stood up, the girls gasped like theyb saw a ghost. Why? it's because of...... 

Kuroto: DAN KUROTO-SHIN HAS ARRIVED!!!!!! HAHAHAHAHAHAHA!!!!! 

"AAAAHHHHH!!!!!!!!!!" The girls screamed as they grouped hug themselves. With Arfoire, she just gawked when she saw Kuroto ALIVE!

Arfoire: How the heck is he still alive?! I thought he's dead! 

 ???: Technically..... 

 Arfoire then looked back to Tsukasa. 

 Tsukasa: He's dead, but he's currently a bugster. So that means he isn't dead, just revive. I only took out his life points, now he has 94 left. 

 Arfoire was about to say something else, but Tsukasa cut her off. 

 Tsukasa: I have to hold them off first. You can say that to me after I defeat them.

 Once Tsukasa said that, the dimensional wall behind him sucked him in only leaving Arfoire with the rip-off Pikachu. With the others, the girls continued to shiver when they saw the revived Kuroto. 

 IF: H-HOW A-ARE Y-Y-OU S-S-STILL A-A-ALIVE?! 

 Emu: He's a Bugster now and he has 94 life points left. 

 The girls looked back to Emu as he and the other riders went to Kuroto and stood beside him. 

 Compa: S-So......he died...? 

 The Riders nod. 

 Parado: Hai, and now he and Kiriya are revived as Bugsters. 

 Rom: K-Kiriya-nii chan as well? 

 Kiriya: Yeah, I was also dead. Hehe. 

 As the girls calm down, the dimensional wall appeared behind the riders and Tsukasa came out with an already strapped DecaDriver (Or Neo DecaDriver). The girls and Riders looked back to Tsukasa as they readied their weapons. 

 Tsukasa: I see you noobs are here to save them. Well not for long.

Tsukasa threatened as he took out his Decade RideCard. Emu, Parado and Kuroto-shin stood right in front of the girls and riders as he and Kuroto, but Parado, had an already strapped GamerDriver and they already had gashat/s on their hands. 

 Emu: Decade! Let's settle this! 

 Tsukasa: I know. Which is why we need to end this. As the all four Riders are having an mexican stand off, Emu and Parado fist bumped each other as Parado himmself was sucked inside Emu, which made the girls gasped when they saw that, then Emu's eyes glowed red as he and Kuroto pressed their perspective Gashats. 

 Kaigan Ghost!

Mighty Action X! Dangerous Zombie! 

Tsukasa, Emu and Kuroto: "Henshin!" 

 Gashatto! Let's Ride! Metcha Ride! Mutcha Ride! What's your Ride!? I'm a Legend Rider! 

Gashatto! Gachan! Level Up! Mighty Jump! Mighty Kick! Migh~ty Actio~n X! A Gacha! Danger! Danger! Death the Crisis! Dangerous Zombie! 

 Kamen Ride: Decade! 

As both Riders transformed into their forms. Emu and Kuroto-shin were clad in their Ghost Gamer Level 1 and Zombie Action Gamer Lvel X-0,the three Riders roared as they ran to each other and attacked by their fists. The remaining Riders could only watch as they took out their Gashats and pressed them. 

 Taddle Quest! DoReMiFa Beat! 

 Bang Bang Shooting! Jet Combat! 

 Bakusou Bike! Giri Giri Chambara! 

 Taiga: Come on! Let's go in while both Ex-Aid and Genm are holding back Decade! 

 As Taiga said that, all riders and girls nod as they rushed towards the monsters. Before the Riders transformed into their level 3 forms. 

 Nepgear slashed a robot monster and went forward. Brave also slashed some enemies with his Gashacon Sword and his Watts-Up Sounder. Rom and Ram went for a simple strategy: the former guarding one side and the latter attacking the other. Uni shot them from afar while Snipe flied onto the air and shot as many robot monsters as he can. Both IF and Compa used their weapons –the katars and syringe respectively– to lay waste on the monsters. Kiriya just rushed in and hit every enemy in sight with his Gashacon Sparrow in sickle mode . Nepgear was taken by surprise as a monster shot her with a plasma beam. Instinctively, she raised her shield. Ram tried to help her but was caught off guard with another monster. Before she got attacked, Hiiro came to her aid. 

 Brave: "Don't let your guard down!"

Nepgear: "Hiiro-san...." 

Uni tried to shoot the one behind her, but she ran out of bullets. She jumped out of the way to regroup and reload. Nepgear went out of harm's way, but another one shot her with a barrage of plasma bullets. Defending herself, she couldn't proceed. She looked at her friends who were struggling. 

 Nepgear: 'What have I done? I was mistaken. It's too early for us to go into battle! Everyone will die because of me! I can't do a thing! Help me, Onee-chan!' 

 Then it dawned on her, 

 Neapgear: 'I'm relying on her again. I... really do need her by my side!' 

 She remembered that Uni said that they couldn't transform because they were subconsciously limiting themselves, like something that scared them. 

 Nepgear: 'What I'm afraid of is... no longer being Onee-chan's little sister. No, that's not it. I'm afraid of becoming stronger than her!'

She then remembered Taiga's words, '"Be stronger than your sisters, or at least the thought of it."' 

 A burst of energy blasted from her as she generated Share Energy. 

 Nepgear: 'If this is what it takes to bring her back...' "I will surpass her!" 

 At that moment, she transformed. She wore a white version of Purple Heart's attire, but without the sleeves. She also wore white elbow-length gloves, white shoes, stockings, and had wings in the shape of sections of a circle. Her eyes were blue like her sister, and her hair was lilac with a futuristic-looking button. A gunblade was her weapon of choice. She had changed into her CPU form, Purple Sister. 

 She blasted monsters surrounding the others. After she did that, she dashed to the barrier holding her sister captive. 

 Purple Sister(Nepgear): "I cannot retreat here. So... I have to do this!" 

 She eliminated any monster that was on her way. The others advanced towards their goal. With the three fighting Riders, Decade was taken aback by Ex-Aid's, who's in level 2 already,

 and Genm's teamwork. He didn't want to lose yet as he took out his Ghost RideCard.

Decade: This might do the trick. Henshin! 

 Decade inserts the RideCard in his open DecaDriver then he closes it. 

 Kamen Ride: Ghost! Let's Go! Kakugo! Gho-Gho-Gho-Ghost! Go! Go! Go! Go! 

 Ex-Aid: Oh no you don't! Dai Henshin! 

 Ex-Aid says as he took out the other Gashat and switches it to the Kaigan Ghost Gashat. 

 Barcode Warrior Decade! 

Gashatto! Gachan! Level Up! Destroyer! Sekai no Hakaisha! Barcode Warrior!

Then the two Riders rushed to each other and they clashed their perspective weapons at each other while Genm could only just look. Then the two riders clashed again struggling to get past to one another. 

 Ex-aid: Why are you working for Arfoire?! Tell me!

 Decade could only just laugh at Ex-Aid's question as he sighed and let his guard down meaning Ex-aid get's past Decade as he slashed Decade's torso making him to stumble back down to the ground reverting him back to his default form. As the tenth Heisei Rider was down, Genm points his Gashacon Breaker in sword mode on Decade's neck as Ex-Aid lands beside Genm. 

 Ex-Aid: Just.....why? 

 Decade: Listen kid, I don't work for Arfoire. Second, I'm only here to see what those two Gashats looked like in physical. 

 "Nani?" the two GamerRiders asked in unison as the dimensional wall was behind Decade. 

Decade: That's only it, noobs. I must take my leave.You might need them in the future. 

 As Decade said that, the wall sucked him in making Ex-Aid and Genm ponder what he meant by that.

Genm(Kuroto): Let's go back to others.

Ex-Aid(Emu): Right.

Genm(Kuroto): Wait.

Ex-Aid(Emu): What is it?

Genm:(Kuroto): We need make sure that you are out of your form.

Ex-Aid(Emu): Oh right.

Gachon! Gashoon!

Emu: Let's go.

Genm nods and returns to the others.

Stay tuned for GAME 4.5!!