Flowey and Bill float in the void between worlds. Flowey feels something inside him, the DETERMINATION of his stolen soul. For a moment, he feels like Asriel again, but the feeling quickly fades.

They happen across a world. They arrive in the world of Bill's origin, Gravity Falls. "OK," Bill explains, "we need to be quick. There's this kid, Dipper Pines. How fast can you move underground?"

"Very," Flowery replies, "coast to coast in an hour."

"Great," Bill replies, "I need you to go to California and kill Dipper Pines. He should be obvious, important characters are always... Diffrent. Some sort of unnatural power emanates from them. In this world, we have the original six. I've already killed M and Pokeball, and I've made a deal with Love Katana aka. Scott Pilgrim. The soul you have is Asgore's, who doesn't have that aura. Kill Dipper and take his soul."

Flowey senses DETERMINATION. He heads to the source. For a moment, his empathy returns again. He remembers Asgore, but not as Flowey, as Asriel. The feeling fades again.

Flowey arrives at Dipper's house. Dipper and Mable leave and begin to walk to the bus stop. Seeing them reminds Flowey of Chara. This time, he refuses to feel empathy.

Flowey attacks, killing Dipper. Mable tries to scream, but Flowey kills her too. He takes their souls...

Meanwhile, in Undertale...

Papayrus sits, a bitter scowl across his face. Flowey is gone, Toriel is dead, and as far as he knows, Frisk is dead. He's filled with a LOVEing felling. Alphys arrives.

"Where's the soul?" Alphys asks.

"There was no soul," Sans explains, "Flowey must have taken it, but he got away."

"Well," Alphys explains, "I think I know where he went. There's a few tears in space-time. He probably went through one. If we can find him and reclaim Frisk's soul, I may be able to make Frisk a new body. Like the one I made for Mettaton."

"Well let's go," Papayrus replies hiding his murderous rage, "we can't let Flowey get another soul."

"Follow me," Alphys replies. The three walk outside and under a bridge, taking them to another world.

Meanwhile, Frisk finnaly arrives in a world where they can accomplish something. Which leads them to wonder why did Gaster kill Red? Is Gaster working with Bill? No, probaly not, they decide that Gaster wanted Red's soul, but Red didn't have enough DETERMINATION.

Frisk looks around, they're in a dungeon. A massive suit of armor with a hammer attacks. They enter a FIGHT.

Frisk tries to act, but they can only check. They try to flee, they can't escape. The paladin sweeps its hammer across box, Frisk is unable to douge.

The paladin stands there, silent and ominous. Frisk tries to spare it, but it refuses and prepares to attacks again. Frisk took ten damage from the last attack, one more will kill them. The paladin swings its hammer and Frisk prepares to reset.

However, a flaming sword stretches forward, burning and killing the Paladin. The FIGHT ends. A man clad in orange, glowing armor approaches Frisk, in the man's hand, is a sword that glows with the fury of the sun. The man is followed by a small, blue dragon and a glowing wisp.

"Who the hell are you?" The man asks.

"I'm Frisk," Frisk replies, "who are you?"

"Name's Sebastian," the man replies, "you must be new here. This is Terraria, a lost world between the corrupt land and the bloody land, both of which have begun to corrupt this land. However, the hallow protects us. I've built a city in the hallow, why don't you come? You'll be safe, and we can discuss more on this place."

Suddenly the ground begins to shake. A deep rumbling mixed with the sound of machinery fills the air. "Oh no!" Sebastian yells, "Frisk, we gotta move! It's coming! Follow me if you value your life!"

Sebastian leads Frisk out of the dungeon, passing by some men in blue robes. They move away from the dungeon as the rumbling grows ever closer. They stop on a massive hill.

Sebastian takes Frisk's hand and shoots his grappling hook into the air, landing them on a floating island.

"It won't be as dangerous up here ," Sebastian explains.

"What won't?" Frisk asks.

"The Destroyer," Sebastian explains, "a nocturnal mechanical worm made by some steam punk chick down at the tower. She designed it, along with Skeleton Prime and The Twins to protect a town she once built. She built several of them, and they became self-replicating. They went rouge, not waterproof, the rain broke em'. They were built to fight off the monsters that come out at night. Now, they mistake us for monsters. Hey, can you handle yourself in a fight?"

Frisk fells Chara's excitement. "Well," Frisk replies, "I can but-"

"Great," Sebastian interrupts, "take this." Sebastian tosses Frisk the Terra Blade. A weapon much more dangerous then some old knife. Chara shakes like a temmie with excitement.

Frisk tries to explain, "I can't use this, I-" The Destroyer appears, interrupting Frisk. Sebastian leaps, a pink blade in hand. Whenever he swings it, stars rain down. These stars rip The Destroyer to shreds. Until suddenly, it leaps towards the floating isle, attacking Frisk.

Frisk enters a FIGHT. They check The Destroyer. 500atk 300def. Can be hit multiple times with certain weapons. The Destroyer burrows in and out of the box, attempting to corner Frisk, but then its turn ends. Frisk checks the Terra Blade. 800atk. Can be used to hit enemies to get a free turn in the following FIGHT. A blade forged of dark and light from Terraria. Loved by Chara.

Reluctantly, Frisk equips the Terra Blade. Chara grows ecstatic, eager to test the blade.
Frisk prepares to FIGHT. However, Sebastian intervenes, and kills the Destroyer before Frisk can finish their attack.

Sebastian gathers the loot. "Let's go," Sebastian demands, "before more monsters come out." The two walk to a massive tower made of varying, luxurious materials.

Frisk and Sebastian go up the tower to the top floor. Sebastian shows Frisk to a room made of topaz. "So what's your story?" Sebastian asks. "Were you banished here, or stranded?"

"Neither," Frisk explains, "I'm not from this world. There's this being, gen3king, said I need to get people to help me save the world."

"From what?" Sebastian asks.

"Bill Cipher," Frisk explains, "some weird, triangle thing that wants my soul. As far as I know, he's the biggest threat."

"Why?" Sebastian asks.

"He's manipulative, but I don't know much else."

"Well, it's something it do," Sebastian replies, "I'll tag along."

"Great. Now, we need to get all the help we can. Have you noticed anything odd? Breaks in reality?"

"Yeah," Sebastian explains, "there's a wormhole under the tower. I have a pit that I use to get to the underworld quickly." Sebastian walks outside, "just follow me!" Sebastian jumps into a deep pit, Frisk follows. They arrive in the next world.