This changes everything.
Are you sure you've got the recipe right?
Of course I'm sure.
- Three parts limestone... - Whoo-ho-ho-hoo!
-Three parts limestone. -Uh-huh.
Give it all you got, bud.
Two parts sandstone...
Sandstone, check.
One part iron ore.
-Up high. Down low. -Yeah.
And now, the secret ingredient.
One giant spoon of cooled and hardened Gronckle lava.
Gronckle Lava! Of course!
Viola!
You have Gronckle Iron.
All right. Let's see how your Gronckle Iron
holds up against a close range spine shot.
Be our guest.
Stormfly! Spines!
Giant, furry...
-teeth. -Tuff, no!
Even the teeth were furry.
Thank Loki!
You guys are not gonna believe what just happened. It was--
We'll talk in a little bit.
There I was, me and my inner nut.
Tuff, what happened out there?
It was dark.
So dark, Hiccup, not even the moon to light my merry way.
And then all of a sudden, out of the darkness,
red eyes, ferocious teeth,
a growl that could peel the beak off a chicken!
Sorry. Metaphor.
It grabbed me and tossed me around
like a rag doll, a very handsome rag doll.
And then, it left me for dead.
Can you tell us anything else about what attacked you?
It was far too fast.
Too cagey, too quick... Give me another adjective.
Ooh, how about, "imaginary"?
Laugh and guffaw, if you must.
But would an imaginary beast give you one of these?
Oh, there's nothing anywhere that matches this.
The Book of Dragons, Bork's papers,
even the Dragon Eye.
-Won't be in any of those. -Gobber?
It's obvious we're all thinking the same thing.
I can pretty much guarantee you we're not.
But why don't you tell us what you're thinking?
Lycanwing.
The Lycanwing Dragon is a rare beast,
and a vicious one at that.
Those who survive its bite are not actually survivors at all.
They are doomed to a life as half-man, half-Lycanwing.
At the height of every full moon,
the condemned Viking transforms into a terrifying dragon!
Wings the size of a house,
teeth stronger than Gronckle Iron
and a thirst for blood.
Tuff, the Lycanwing is a legend.
It's not a real dragon.
Gobber, have you ever seen a Lycanwing?
No.
Has anyone on Berk ever seen a Lycanwing?
Not that I can recall.
I rest my case.
But the stories...
they'll straighten the hairs on a curly-haired yak.
His name was Kessler!
-That's a weird name. -Weird kid.
Bright red hair, eyes as black as night.
And naughty as a Nadder in a chicken coop.
That's seriously naughty.
Am I right? High three.
Never mind.
One night, little Kessler, against his parents' wishes,
went exploring in the forest.
Days went by, no sign of him.
Only a far away scream coming from the woods.
The little bugger never returned.
Or did he?
Every year from then on,
when little Kessler's birthday rolled around,
a red black-eyed dragon would fly over his parents' house,
and pluck one of their sheep right out of the paddock!
The dragon would look back, taunting them.
But I wouldn't worry, Tuffnut. You're not exhibiting any symptoms.
Hey, hey, hey. Can we really say for sure
what our pal Tuffnut is exhibiting?
Come on, lay 'em on us. Just for the sake of argument.
I don't think that's a good idea, Snotlout.
First off, you'd be lookin' at sensitivity to light.
Aren't you always telling me that it hurts your head
when you look into the sun?
Yeah, I did say that.
Unquenchable thirst.
-You look thirsty. -Hey! He always looks thirsty!
What else, Gobber? There's gotta be more than that.
Fidgety arms, on account of the wings starting to sprout.
Ow! Watch it, would ya?
Gee, sorry, I'm fidgety.
What else?
Finally, the overwhelming desire to eat fresh fish.
Tastes terrible!
How awesome was that? What an idiot.
You have no idea what you've done!
Uh, Tuffnut, what are you doing?
I give you Macey.
Hold her dearly.
She likes sitting by the window, looking at the moon.
The full moon. Hah, the irony.
Oh, my Thor. That's so thoughtful.
Fishlegs, I give you my favorite bowl.
Hey, that's my bowl!
And now, now you have found it.
Eat well, my friend.
Eat well.
Hiccup, Hiccup, Hiccup, what do you give the Viking who has everything?
-Here. -Hey! You can't give me away!
In time, she'll come to you.
She's going to take this hard
and will certainly go through a prolonged mourning period.
She's gonna need a new twin brother.
I nominate you.
It's a terrible job and she smells horrible.
You'll have to dress like me and grow your hair,
so there are perks.
All right, all right. What did I miss?
I'm just... preparing myself.
-For what? -Astrid, have you seen that moon?
When it rises to its apex,
which I think is a word that means the tip-top,
I'm going full dragon. Tuffnut Lycanwing.
You're a funny guy, Snotlout. I'll eat you first.
Tuff, we went over this. The Lycanwing is a myth.
It's not real.
You're not turning into a dragon.
- Fishlegs, will you please tell him? - Uh...
Now, I must go and say my most difficult goodbye of all.
If you'll excuse me.
What did I tell you? What did I tell you?
You are gonna help me fix this, Snotlout!
Ya hear me?
Wow. They can really get riled up, huh?
Barf, Belch, my winged brothers, I'll see you in the friendly skies.
Who knows? Maybe we'll slide down a rainbow together.
Okay, you ready?
Hmm, this should work.
Good view, adequate ventilation...
will keep the others safe from me when I turn.
I feel you, my animal brother.
My last night as me.
For tomorrow, at this time, alas, I shall no longer be human.
I will be Tuffnut Lycanwing!
Killing machine!
Changing. Changing!
Well, I did my best.
He's not talking to anyone but that chicken.
And he's convinced the moon didn't apex last night,
so it must be tonight.
Talk to me, chicken, talk to me.
-What are they saying? -Well, that's great.
- Is that... - Ruffnut. Flying Hookfang?
-Where's Snotlout? -There he is.
Big lump behind her. Tear-stained face.
Whoa! Oof!
What a rough one.
W-what are you two doing? We could use you now.
We've been gathering samples.
- Samples of what? - Aah!
Dragon bites. One of these has to match Tuff's
and convince him that this Lycanwing deal
is just another one of his paranoid fantasies.
And, why is Snotlout--
He started this stupid thing with his impressive,
yet sinister, powers of suggestion.
It's all Snotlout's fault
my dopey brother thinks he's turning into a dragon.
Looks like you earned this one, Snotlout.
Not so funny now, is it?
No, Ruffnut, not funny at all.
Let's go, pal.
Hiccup! Hiccup!
Oh, you're not gonna believe this.
I was at my wit's end, trying to think of something,
anything that could help with this, when my perfect little angel
crushed my desk and look what I found!
It's the one you found in the cave with Gustav.
I've been meaning to give it back, Hiccup.
I'm usually not so irresponsible with artifacts.
Fishlegs, we have got to go see what's on it!
I'm telling you, it's not flat. Got to be round or oblong.
Think about it. The moon, round. Sun, round.
My head, oblong.
Uh, I hate to interrupt this fascinating debate, but--
Stand back, sis! It's not safe to be around me right now.
I could go at any minute.
Yeah, whatever.
Hold out your arm, we need to check something.
Oh, for the love of Thor, do it.
I'm pretty sure I need serious medical attention.
-Whoa, what happened to you? -Ask her.
-What happened? -Helping me find out what happened to you.
I think we all know what happened to me.
Any day now!
Hold still!
Well, we can cross Terrible Terror, Night Terror,
Wild Nadder and Gronckle off the list. Let's go.
I'm not going anywhere with you. You're stark raving mad!
Let's go, I said!
Okay, okay, I'm coming! Ow, ow, ow.
This is the last one, and I'm paid back.
And anyway, how was I supposed to know
that he'd go this crazy?
What? Have you met my brother?
Fine. Whatever.
Man, I am so glad you're not my sister.
No. You wish I was your sister. You think I'd be dragging
your butt all over the jungle risking your life
if my brother weren't the most important thing to me?
Think about that!
Haha, yeah!
Uh...
Whoa, awesome. I love the pus.
-What bite is that? -Sea snake.
- I don't feel so good. - Another no match.
Aren't those things supposed to be poisonous?
-Don't think so. -I'm pretty sure they are.
-Nope, you're wrong. -I'm pretty sure I'm not.
Oh, guys, there's definite pois...
Hah! Told you. Do I know my sea snakes, or what?
That is seriously creepy.
Hey, should we check his breathing?
Eh, wimp.
Well, that's it. That's every combination I can think of.
Wait, wait! I see something. Okay.
Let's try this. Toothless?
Now, am I crazy, or is that a man with dragon wings instead of arms?
You're not crazy.
And there he is again, with a tail to go with the wings.
-Hiccup? -Can you make out what this says?
"No man shall tread on these shores,
lest he become what he has most feared."
That must be Lycanwing Island.
And that, my friend, is why we always listen to Gobber.
Hiccup, this Lycanwing,
it could be, well, not a myth.
That island's not far from here.
Why do I get the feeling
we're going on a little Hiccup-Fishlegs recon mission?
Okay, Fishlegs,
if we do happen to run across a Lycanwing,
we need to have a really good plan.
How about, don't get bitten?
That sounds like a good one to me.
Yup, me too.
Okay, Lycanwing Island, here we come.
Lycanwing Island?
Okay, don't tell anyone,
but I didn't actually believe it before.
I was just trying to mess with their heads,
be quirky and eccentric
by giving away my stuff and locking us in here.
Plus, I get along really well with you.
How could I know it'd come to this?
How could I know it was real?!
How could I know?! How could I know?
Okay, Toothless, give us some light.
Let's go, Fishlegs.
Don't worry, I'll be right next to you the whole time.
All right, this better match
'cause I don't know how much more he can take. Tuff?
Do you see what I see, Snotlout?
I don't know.
I think I've gone blind from all the venom. Ugh!
He's out. Tuffnut on the loose.
This is bad.
This is very bad.
I can't be contained. Look at that moon.
In a matter of hours, it will finally apex,
and I will be transformed into a great scaly beast
with nothing to do but feast on my prey!
It's like, all my senses are alive for the first time.
I can feel things, see things,
hear things I've never been able to before.
You know what I mean, chicken?
Yes, Tuffnut. I understand.
What's the problem?
I thought you wanted to converse with a chicken.
Oh, chicken, I did! I've longed for this moment.
-Mmm. -If only it could last forever.
But only a fool lives his future in the past.
Our time is short, chicken.
Come, our fate awaits.
"Beware the beast.
Turn back before you become him.
Your fate is sealed!"
Did you hear that, Hiccup? Our fate is sealed!
Fishlegs, we're fine. It's just an old cave drawing.
Can't believe we're gonna die chasing an imaginary dragon.
Hiccup? There it is!
If I have to go, girl, I'm glad it's with you.
All right, Toothless, light.
Look. Its eyes.
I am not looking into that thing's eyes!
- Do you know me? - Fishlegs! Would you just look?
Hiccup, are those...
Dragon Eye lenses.
Gobber, how's Tuff doing?
Gone. He and the chicken flew the coop last night.
Said something about taking flight
off the tallest cliff when he went "full dragon."
-You didn't try to stop him? -I was a bit busy.
Doing what?
Extracting sea snake venom from Snotlout.
You should've heard him.
He sounded like a yak being turned inside out.
Well, we better go tell Ruffnut.
Gone, too. Went to look for her brother.
She seemed to think
whether he was a dragon or not, he wouldn't survive "the flight."
Dragged Snotlout with her.
Personally, I'm surprised he made the trip.
The boy's not looking so well.
I don't know if Gobber got it all.
I'm starting to feel a little woozy, and all I see is fog.
It's foggy, you mutton-head.
Hurry up, before Tuffnut jumps off a cliff or something.
You think when he's a full Lycanwing,
he'll remember all the nasty stuff I said to him?
Well, he did say he was gonna eat you first.
Hopefully, it'll be quick.
No, actually, I hope it'll be slow and painful.
I am Lycanwing!
Run! Run for your lives!
No, no!
- They're all gonna laugh at me! - Oh, God.
Tuffnut! Get back here!
I command thee! Lycanwing!
Oh, slow down. Slow down.
Ah!
Huh?
Tuff? Is that you, buddy?
The apex is upon us! Come on, do it with me, chicken.
It feels so good!
And we only have a few moments left till we can fly! Fly!
Riding high, the currents of the wind
blowing through our hair!
I mean, your feathers, you have feathers, not hair.
Free from the bonds that bind humankind!
We have to fly away, right?
I would never forgive myself if I ate the other Dragon Riders.
I mean, on the other hand though,
I'm sure as a dragon, I would find them delicious,
especially that Fishlegs.
Good Thor, he looks like a marshmallow.
Flesh colored and with a little hair on the top.
It's happening. It's happening. I can feel it!
Are you ready, chicken? Are you finally ready to be free?
Tuff, don't do it!
Ugh! We've been through this, chicken.
Don't try and impersonate my sister!
We made a pact. I'm doing it, and you're coming with me.
Tuffnut, it's me.
Look at me, bro.
-You can fight this! -I can't, sis.
You don't know the hold it has on me.
It has its claws in me.
What if we fight it together? We do everything together.
We always have!
I refuse to spend the rest of my life doing anything alone.
Do you hear me?!
You always were the brave one.
Mom should have named you Tuffnut.
But she didn't. She named you Tuff.
I'm begging you! You know how much I hate to beg!
Just get down from there.
It's too late to stop the metamorphosis.
Can you not see what I've become?
Tuff, stop!
There is no metamorphosis, all right?
You are not turning into a dragon.
Fishlegs, please tell him.
It's true. We found the cave of the Lycanwing.
It was just a myth to keep people away from these.
No. No! I don't believe you.
Look at me, I'm hideous. I'm terrifying!
Tuff, you're not hideous! Terrifying at times, yes.
But hideous, no.
Well, then how do you explain this?
Can't do it, can you? Hmm? That's what I thought.
Now, it's time to fly!
Wait, wait, wait! I can explain... I can explain it!
Whoa! You look worse than I do.
Uh, Snotlout, what do you have in that bag?
I have what did this!
The Lycanwing got him, too.
Save yourselves!
It's not a Lycanwing. It's not even a dragon.
It's a wolf. And I caught him!
You're not turning into a dragon, Tuff.
I'm not? I'm not!
We've been trying to tell you.
I just made you think that!
But it's not true.
It's funny, but it's not true.
No...
Don't worry, buddy. I got you.
We're going home, chicken.
We're going home.
Oh, thank Thor.
I know what you'll say. You realize how much you love me.
You were scared you were gonna lose me.
And I better never do that again.
Actually, I was just going to tell you what an idiot you are.
Come here.
Thank you.
Uh, Snotlout, where's the wolf?
Huh?