Heather and Windshear were up earlier than everyone and decided to go for a morning flight when they start hearing dragons in distress. Following the cries, they find that their beaches are filled with Vikings, but she doesn't know exactly who.

"I've never seen those colors before. But we have seen that insignia before, haven't we, girl?" Heather asks her dragon who snarled at them. "Yeah, Dragon Hunters, I'm not a fan either. Let's get a closer look." She says and Windshear flies off and they see they've caged several different types of dragons.

"Quiet down, you useless lizard." One of the Hunters tell a Nightmare that's when someone much bigger comes in and slams his head against the cage.

"Just load 'me up." The bigger man warns the smaller man.

"Yes, Ryker. Sorry, Ryker." He apologized and Heather thinks he must be the man in charge.

"Look at him. Powerful. Perfect. Remember, they're smarter than you." Ryker informs him and the Nightmare goes to bite his head when Ryker throws his man before he could get bit. "But not me."

Ryker then starts sniffing the air and looks to the rock formation that Windshear and Heather are hiding.

Heather stays behind the formation, there's no way he could smell her dragon.

"And grab that Razorwhip!" Ryker tells his men. Well, there goes that theory.

As the men come charging at them, Heather takes to the sky and flies off to the Edge to get help.

But not before taking a arrow to the leg as the archers were shooting at her, but Windshear's skin seem to be protected from the arrows luckily.

Heather is not so lucky as she starts to feel hazy and off. That's when the whole world goes black.

-

Hiccup and Toothless look out as the sun is starting to set and there is still no sign of Heather or Windshear and they're starting to get worried for the two of them.

"Maybe they went exploring and lost track of time." Fishlegs offers as a solution.

"She's never been gone all day like this. Not without telling me at least." Hiccup explains to him. Over the two years, never has this happened before. They always warned the other if they were going to be gone to the point of worry. "Somethings wrong, I can feel it." He says and looks out pass their island.

"And I'm gonna find her." Hiccup promises and hops on Toothless before flying off.

-

The two of them fly off and keep looking as Toothless uses his sonar to find them and they can't find them anywhere.

"She's got to be out here somewhere." Hiccup states, but this is getting seriously bad.

Toothless then starts smelling something and the familiar screeches on a nearby island and starts flying in that direction.

"Whoa, you got something?" Hiccup asks as they approach a nearby island where Windshear is and hiccup looks and sees Heather with an arrow next to her leg.

"Heather!" Hiccup shouts as Toothless lands and he races over to her as Toothless runs to Windshear to check on her.

"What...What took you so long?" Heather asks him before passing out.

Hiccup is happy to see she's okay, but also wonders how she got all the way out here.

-

Heather taker wakes up and sees she's back in her hut and sees Hiccup is with her and her leg has been bandaged up.

"Hey, it's okay. Just try to relax. You've had a tough night." Hiccup tells her. "What happened?"

"Dragon Hunters. I saw them, Hiccup. The dragons were all in cages." Heather tells him.

"Dragon Hunters?" Hiccup asks.

"A whole fleet of 'em. They were after me, and I took an arrow to the leg." Heather tells him. "And then there's this big, ugly one. When I get my hands on him..."

"She's okay." Hiccup assures Toothless.

"Come on. We have to save them." Heather says as she runs off to get Windshear.

-

Them and everyone else make it to the beach and find everything they left but it isn't a lot to go off of.

"Nothing but a bunch of trash." Tuffnut tells them.

"Looks like these Dragon Hunters are also litter bugs." Ruffnut adds on.

"There should be a fine for that. I mean, am I wrong, people? I mean, what if everyone were this careless and inconsistent? What then? Where would we be then?" Tuffnut asks.

"Here, but he'd be less crazy." Hiccup replies to that.

"I knew coming here was a bad idea." Snotlout says as he looks through an empty chest. "What did we hope to find anyway?" He asks when something stabs his foot and he screams in pain.

Astrid walks over to him and looks at what he stepped on.

"Oh, look at you. Rushed right over to help, didn't you?" Snotlout asks her. "You know what that means, Astrid."

Astrid ignores him and picks it out of his foot.

"That looks like the arrow I found with you." Hiccup tells Heather.

"They were shooting Windshear with them, but they just bounced off of her, thanks to her armored skin." Heather says and looks to her injured leg.

Fishlegs looks at it before smelling it and tasting it.

"If I had to make a guess, it's some sorts refined dragon root." Fishlegs tells them. "I've heard that at high concentrations, it can overwhelm a dragon's senses completely, making it almost impossible for them to fly."

"It's a good thing you were riding Windshear." Hiccup tells her.

"Think about it. Just one quiver if these arrows could decimate an entire flock of dragons." Fishlegs tells them and Hiccup takes the arrowhead.

"Then that steels it, we need to find a way to stop them. And I think we all know the first place to look." Hiccup tells them.

-

They go to the Reaper, where the teens first found the Dragon Eye and where the Hunters must've gotten their gear.

"All right, look for anything that can help us track the Dragon Hunters. Maps. Coordinates. Hidden compartments." Hiccup tells them.

The twins were looking and all they find are bones and empty boxes.

"There's nothing here. Someone totally looted this boat." Tuffnut states.

"This ship gives me the creeps." Ruffnut replies.

"Sunken ships, Dragon Hunters, the creeps. I bet this thing is crawling with ghosts, and other such spirits planning on dragging us down to the dark Viking underworld where they will torture us by tickling us for eternity!" Tuffnut says while using his sister as a shield.

"Niflheim?" Ruffnut asks her twin.

"Gesundheit." Tuffnut replies.

"Niflheim? I knew coming here was a bad idea." Snotlout states as he as well starts getting afraid. "What did we hope to find anyway?" Snotlout asks as he kicks the helm, breaking the floor beneath him. "Get me out of here!" He calls out and they look to see him stick with a bunch of boxes and barrels.

"What If that's what the ghost want us to do?" Tuffnut asks him.

"Tuffnut!" Snotlout cries out in anger.

Inside the ship, Hiccup and Heather are looking around for anything to help as Heather describes Ryker to him.

"You just didn't see him. He actually enjoys hunting and caging dragons." Heather says as Toothless starts sniffing a shield on the wall.

"What you got, bud?" Hiccup asks as they take a closer look and see something. "Heather, do me a favor, hitnthis shield with your axe." He asks for her and when she did, a Dragon Eye lens comes out.

They brought their discovery to the others, and it seems to be for a different species of dragon than they have.

While they did that, Tuffnut looks at the shield they took the lens from.

"Yep. It's either the inside of a yak, or a Changewing in a cage." Tuffnut says and they take a closer look at it and see he's right.

"Looks like we have to head back to the Edge." Hiccup says, since he and Heather actually rescued and trained one a while back.

-

They return to the Edge and Heather calls the Changewing they named Shade and had him glow some of his acid to light the dragon lens.

Fishlegs gets to work into translating what it says and finds nothing new.

"This doesn't help. We've seen this map before." Fishlegs tells them.

"It must be a hunter port. It's the closest to the beach where Heather was attacked." Hiccup tells him. "Odds are, that's where they're headed. After that, who knows?"

"Then we need to stop them." Heather states, hating the idea of the dragons in cages.

"But how are we going to avoid those dragon root arrows?" Fishlegs asks.

"Funny you should ask, Fishlegs. For the plan to work, someone's gonna have to get shot." Hiccup tells him, since Groncles don't get affected by dragon root, as he's found in his studies.

"Yeah! Looks like we're up!" Tuffnut and Ruffnut say, happy to get shot.

"There is something wrong with those two." Heather tells Hiccup who agrees.

-

Hiccup and Heather come flying in wearing their masks and everything as Ryker sees them.

"A Night Fury?!" Ryker asks, whole happy as can be as the other dragons come in and start having them shoot at them.

Windshear comes flying in and strikes their weapons and while at it, she was able to stop Toothless from getting hit.

"You sure this plan is gonna work?" Heather asks him.

"Fishlegs, you're up." Hiccup says and Fishlegs goes in and spews lava before getting hit.

"They got Fishlegs and Meatlug." Astrid tells them.

"Take 'em below and toss 'em in a cell!" Ryker tells them and drags them away.

Hiccup comes flying back in and blasts behind Ryker, playing his part of the plan out.

"What Drago would give for that Night Fury." Ryker says to himself.

Hiccup goes to turn around when they release a catapult bolder at them and Windshear flies in help, but ends getting hit and Heather falls off.

"No!" Hiccup shouts and flies down to save her when they shoot a grapple and wrap Heather, catching her.

Hiccup tries to get there faster, but all he gets is constant arrows at him.

"Hey! Let me go!" Heather says as she's pulled up aboard deck.

"Oh, feisty one, aren't you?" Ryker asks.

Heather tries fighting back but it doesn't help as she's captured. But Fishlegs got his part done and released the dragons from their cells.

Except Ryker was prepared for that as a hundred arrows comes flying in to take them down as the twins are taken down, and Hookfang gets hit.

Heather was able to get away from the men and Windshear glided across the boat for her to get away.

Hiccup sees she escaped and knows they need to get a better plan to safe them.

-

On the boat, Ryker throws them into a cell and Dagur appears.

"Surprise! Did you miss me? Of course you did!" Dagur says as the doors to the cage are closed on them. "Enjoy your new home. You'll be with us until Hiccup and my sister returns. And we know they will." He states and leaves them.

-

Hiccup and Toothless carried Hookfang to a nearby island where Heather met up with them and they spend the night working on a plan to save their friends as Toothless returns with fish he caught for them.

"Great! I'm starving." Snotlout says when Hookfang eats all the fish Toothless left for them.

"It looks like somebody's feeling better." Heather says, seeing the dragon is okay.

"What are you two doing?" Snotlout asks them.

"Trying to figure out where the Dragon Hunter's are headed." Hiccup tells him.

"That's a bad idea. Even if we find them, they have those one-shot-and-you-drop poison arrows. What do we do then?" Snotlout asks.

"Well, I have no idea." Hiccup admits.

"I gotta be honest. That's not the answer I was hoping for." Snotlout says. "Okay, the day has come. It's up to Snotfang to come up with a plan." He says before he starts beating himself with a fish. "Help squeeze some brilliance from that beautiful skull."

"I've got an idea." Hiccup says, and Snotlout actually helped.

"I would've come up with something. I was so close." Snotlout complains.

"Come on, Snotlout. We're going to call in a favor from a friend." Hiccup says before he takes off and Heather sees he's heading north.

But why would he be heading...oh.

Heather gets on her dragon and takes to the air as she knows where he's headed.

-

Back on the Dragon Hunters ship, Astrid is returned to the cell after being questioned.

"Astrid, are you okay?" Fishlegs asks.

"Just tired. They questioned me all night. Wouldn't let me sleep." Astrid tells him. "Dagur and Ryker. Well, it was mostly Dagur as Ryker didn't say much and just...stared."

"Yeah, but you hung tough." Ruffnut says from the floor. "You didn't crack. You never talked. Way to go, Astrid."

"Actually, I did talk." Astrid admits to her. "I told Ryker what he wanted to know. The location of the Dragon Eye."

"They're after the Dragon Eye?" Fishlegs questions.

"It's very important to the Dragon Hunters for some reason. They've been looking for it for a while." Astrid explains to them.

"And where did you tell them it was, Lieutenant loose lips?" Ruffnut asks.

"Back at Dragon's Edge, being protected by the dragon army and other riders we left behind." Astrid tells them the lie she made up.

"What?" Tuffnut questions, not understanding at all. "No ones-"

"Supposed to know about it. I know." Astrid says, still lying for the guards. "Only thing I could think of to keep them from going in and taking over Dragon's Edge."

"And they bought it?" Ruffnut asks.

"For now. But eventually, Ryker will send someone to check it out." Astrid tells them.

"You bought us time." Fishlegs realizes.

"Exactly. We need to get out before they find out I was bluffing. Any ideas?" Astrid asks.

"Way ahead of you. I have the perfect plan." Tuffnut says while holding a mug. "We tunnel out." He stays and starts picking at the floor.

"Through the boat?" Astrid asks.

"Into the middle of the sea?" Fishlegs asks him.

"Exactly. They will never see it coming. Even I won't! Especially because I don't know how to swim. Mental note, learn to swim. By tomorrow, or mid next week." Tuffnut says to himself, not seeing the flaw in his plan.

-

Hiccup, Heather and Snotlout are still flying out north passing several islands along the way.

"Is that the island were going to?" Snotlout asks.

"No." Heather tells him.

"How about that one?" He asks looking to a different island.

"Also no." Hiccup says as Snotlout sees a new island coming into the horizon.

"How about that one?" Snotlout asks.

"For the last time...oh, yeah. That's exactly the one. My bad." Hiccup says and they speed off forwards it.

The island in question has a familiar town known as Arendelle where this time last year, they once helped two sisters reunite.

Now they need to ask for their help.

-

On the island, Elsa was just looking out of her balcony when Kai walks up to her.

"Your magisty?" Kia calls out for Elsa, scaring her and causing her to freeze her hands to the balcony.

"Yes?" Elsa asks while getting her hands free.

"There are sightings on dragons approaching Arendelle." He explains and Elsa looks and sees a familiar black dot and shiny skinned dragon and she starts leaving to meet up with them when she starts hearing something.

"Aaaaahhhhhhaaaaaaa." Some voice sings and Elsa seems to be the only one who heard it.

"Did you hear that?" Elsa asks, looking back to where she heard it.

"Hear what?" Kia asks.

"Nothing." Elsa says and goes to see her friends.

-

Hiccup and Heather land and are met by a over energetic Anna and a eternally cold Olaf.

"Hiccup! Heather!" Anna cheers before drawing Heather into a hug and moves to Hiccup.

"It's been a while, Anna." Hiccup says while hugging her back when they break apart and a certain other joins them.

"Who's this?" Anna asks.

"Don't get me started." Heather warns her as Snotlout gets off his dragon.

"Don't tell me we didn't travel all this way so you guys could drop in on some friends?" Snotlout asks.

Meanwhile, Olaf sneaks behind Snotlout. "Hi, I'm Olaf." He greets as Snotlout freaks out on the site of the living snowman.

"How is this happening?! What is that?!" Snotlout asks.

"Hey there, Olaf." Hiccup greets his carrot nosed friend.

"Hey, do you guys know where we can find Elsa?" Heather asks the two of them when the familiar snow queen approaches them.

"Welcome back to Arendelle, guys." Elsa greets them as she approaches them. "But why do I feel this isn't a friendly drop in?" She questions.

"Because, sadly, it's not." Hiccup admits. "Look, we have some friends who need our help to escape a group of Dragon Hunters, and we need help as they have arrows that can hurt our dragons." He explains the situation.

"Oh, come on. What can she possibly do that can help us fight dragon hunters?" Snotlout asks.

Everyone just raises an eyebrow since he obviously doesn't know.

"Show him." Heather tells Elsa.

Elsa quickly waves her hand and sends a blast of ice at Snotlout, freezing him in a block of ice.

"Okay, I can see how that can be useful." Snotlout admits as Elsa let's him go.

"How can I help?" Elsa asks Hiccup.

"All right, I think I know where they're headed. We just need to get their first." Hiccup says.

-

On the boat, Ryker has put the riders to work so they don't plan any escapes when they spot the three dragons approaching.

"It's Hiccup, my sister, and snot-hat." Dagur tells Ryker.

"Standby catapults. Archers at the ready." Ryker tells his men and they do as they're told. "Wait until they're in range."

In the sky, Elsa is on Toothless with Hiccup as she understands what she needs to do for her part.

The first part was freezing the dragons' weak spots with enough ice to shield their skin, but not enough so they can't fly.

"Hiccup, as far as worst plans go, this has to be by the best worst plan ever." Snotlout informs him.

"I'll take that as a compliment." Hiccup guessed.

They all fly in with Elsa ready to jump.

"Oh, look at...he's coming straight in. Suicide run. I didn't think he had it in him." Dagur says seeing him coming.

"The fool." Ryker agrees when the archers fire but all they do is hit the ice.

As they glide along the boat, Elsa leaps off and is faced with archers.

Dagur looked through a spyglass and sees that their dragons are encoded with ice when he notices Elsa on the deck.

"Whos this?" Dagur questions.

Elsa doesn't answer and hits her foot against the boat, and starts freezing the deck of the entire ship, causing the archers to slip and their catapults to freeze over as well.

Tuffnut sees this as an opportunity and smacks one of the men overboard.

"I hate...cleaning." Tuffnut states.

As more men come up from the lower decks, Elsa blasts them with more mist getting them stuck to the wall.

"Go get your dragons, I'll hold them back." Elsa tells the riders who are confused but take it.

Astrid and Tuffnut run below deck and Elsa follows as she sees the upboard deck is cleared.

As they make their way down, they find Fishlegs and Meatlug, Ruffnut and Barf/Belch along with Stormfly.

Above, Hiccup, Snotlout and Windshear take out the support ships surrounding the main ship.

"Men, concentrate all fire on the Night Fury!" Ryker tells the men as it seems the ice is leaving some areas of Toothless exposed.

Luckily, Windshear and Heather took down their weapons and flew off.

Ryker just grabs the bow and arrow while aiming at Toothless when he gets hit by a ice blast, sending him flying.

He gets up and sees Elsa standing there with her arm stretched out before getting picked up by Heather as the other dragon riders make it to safety and fly off with their dragons.

Ryker gets up as Dagur approaches him.

"I may have underestimated these dragon riders. They seem to have some powerful allies." Ryker tells Dagur.

"Yeah, even I didn't see the ice girl coming." Dagur admits, never meeting Elsa before.

-

As they fly back to Arendelle to drop Elsa back off, Hiccup is confused to what he saw.

"Did I see Dagur on that ship?" Hiccup asks.

"Yeah, he's working with those hunters, and they're after the Dragon Eye." Astrid tells him.

"Well, this is good." Heather complains.

"Thanks for the help, Elsa." Hiccup thanks their friend.

"Hey, were friends. What are friends for?" Elsa asks him.

"Aren't you gonna introduce us?" Fishlegs asks Hiccup.

"Sorry. Guys, this is queen Elsa of Arendelle. Elsa, the gang." Hiccup introduces them.

"Hey there." Elsa greets.

"Well, we've gotta get back to the Edge, find a way of protecting the Dragon Eye. But before that, we need to drop our snow queen back home." Heather says and they fly off towards Arendelle once more.