When Hiccup and Toothless discover an ice cave that is home to hundreds of new wild dragons and the mysterious Dragon Rider, the two friends find themselves at the center of a battle to protect the peace.

Hiccup: [drawing a new spot on his map] So, what should we name it?
[Toothless scratches under his arm with his snout]
Hiccup: Itchy Armpit it is.
Hiccup: [to Eret, who's riding on Stormfly with Astrid] Welcome aboard, dragon rider.
Eret: Thanks! I think!
Astrid: [to Hiccup] Where have YOU been?
Hiccup: Oh, you know. Catching up with Mom.
[Hiccup looks up. Astrid follows his gaze and sees Valka on Cloudjumper, summoning her Bewilderbeast]
Astrid: [aghast] THAT'S your MOTHER?
Hiccup: [smiles] Well, now you know where I get my dramatic flair.
[He flies off with Toothless]
Hiccup: [at Stoick's funeral] I'm sorry, Dad. I'm not the chief that you wanted me to be and I'm not the peacekeeper I thought I was. I... don't know...
Valka: You came early into this world. You were such a wee thing. Oh, so frail, so fragile. I feared you wouldn't make it. But your father, he never doubted. He always said you'd become the strongest of them all. And he was right. You have the heart of a chief and the soul of a dragon. Only you can bring our worlds together. That is who you are, son.
Hiccup: I, uh... I was so afraid of becoming my dad. Mostly because I thought I never could. How-how do you become someone that great, that brave, that selfless? I guess you can only try. A chief protects his own. We're going back.
Tuffnut: Uh... with what?
Ruffnut: Uh, he took all the dragons.
Hiccup: Not all of them.
Gobber: [at Stoick's funeral] May the valkyries welcome you and lead you through Odin's great battlefield. May they sing your name with love and fury, so that we might hear it rise from the depths of Valhalla and know that you've taken your rightful place at the table of kings. For a great man has fallen: A warrior. A chieftain. A father. A friend.
Stoick the Vast: Men who kill without reason cannot be reasoned with.
Hiccup: What do you think, bud? You wanna give this another shot?
[Toothless groans skeptically]
Hiccup: Toothless! It'll be fine!
Hiccup: [narrating] Yep, Berk is pretty much perfect. All of my hard work has paid off. And it's a good thing, too, because, with Vikings on the backs of dragons, the world just got a whole lot bigger.
[last lines]
Hiccup: [narrating] This is Berk. A bit trampled and busted and covered in ice, but it's home. It's our home. Those who attacked us are relentless and crazy, but those who stopped them - oh-h-h-h-h, even more so! We may be small in numbers, but we stand for something bigger than anything the world can pin against us. We are the voice of peace, and, bit by bit, we will change this world. You see, we have something they don't. Oh, sure, they have armies, and they have armadas, but we... we have...
[Toothless roars]
Hiccup: ...OUR DRAGONS!
[from trailer]
Drago Bludvist: The dragons are mine now.
Eret: [approaches Hiccup after he saves Berk] That was some pretty fine dragon-wrangling back there. You'd make a good trapper.
[Skullcrusher nudges him playfully]
Eret: Whoa!
[He chuckles]
Hiccup: You know, Skullcrusher's gonna need somebody to look after him now.
Eret: [surprised] Me?
[Hiccup nods]
Eret: I'd be honored.
Valka: [comes over to Hiccup] Your father would be every bit as proud as I am.
Hiccup: Thank you. I'm really glad you're here, Mom.
Valka: And here I'll stay.
Astrid: [walks up to Hiccup] See? I told you it was in here.
[She points to his heart and then presses the button which releases the fin in his back]
Hiccup: [laughs] You're still doing that one. That's hilarious. Come here, you.
[He kisses Astrid]
Valka: [meeting Toothless] Oh, he's beautiful!
[pets him]
Valka: [laughs] Incredible! He might very well be the last of his kind. And look!
[counts his chin flaps]
Valka: He's your age!
Hiccup: Wow.
Valka: No wonder you get along so well!
[notices Toothless's retractable teeth]
Valka: And retractable teeth! How did you manage to...?
Hiccup: [awkwardly] Oh, I found him in the woods. He was... shot down and wounded.
Valka: [goes to various disabled dragons] This Snafflefang lost his leg to one of Drago Bludvist's iron traps. This Raincutter had her wing sliced by razor netting. And this poor Hobblegrunt was blinded by a tree snare and then left to die alone and scared.
[sees Toothless's prosthetic tail fin]
Valka: And what of this? Did Drago or his trappers do this, too?
Hiccup: [gives an embarrassed laugh] Oh, yeah. Well, crazy thing is... I'M actually the one who... shot him down.
[Valka gives him a puzzled look]
Hiccup: Hey, it's okay, though! He got me back!
[to Toothless]
Hiccup: Right, bud? You couldn't save all of me, could you? You just had to make it even. So, peg leg!
[shows Valka his prosthetic leg]
Valka: [sees the scar on Hiccup's chin, shocked] Hiccup?
Hiccup: Eh...
Valka: [removing her helmet] Could-could it be? After all these years? How is this possible?
Hiccup: [perplexed] Uh, should I... should I know you?
Valka: [ashamed] No. You were only a babe.
[Hiccup stares at her]
Valka: But a mother never forgets.
[a startled Hiccup gasps]
Hiccup: [to Valka, about the dragon sanctuary] This is where you've been for twenty years?
[Valka nods]
Hiccup: You-you've been rescuing them.
[Valka nods again]
Hiccup: Unbelievable.
Valka: You're not upset?
Hiccup: What? No! I... I don't know. I... Well, it's a bit much to get my head around, to be frank. It's not every day you find out your mother is some kind of... crazy, feral, vigilante dragon lady.
Valka: Oh.
[chuckles as Cloudjumper helps her down]
Valka: Well... at least I'm not boring. Right?
Valka: [after Drago and his Bewilderbeast win, taking all the dragons with them] Good dragons under the control of bad people do bad things.
Valka: Some of us were just born different.
Hiccup: [playing with Toothless] He's down! Ah, and it's ugly! Dragons and Vikings, enemies again, locked in combat to the bitter...
[Toothless pins Hiccup, who moans in mock pain. Toothless then licks him repeatedly]
Hiccup: Ugh! C'mon!
[jumps to his feet and wipes the drool off his clothes]
Hiccup: You KNOW that doesn't wash out!
[Toothless laughs and Hiccup playfully flicks the excess drool at him]
[first lines]
Hiccup: [narrating] This is Berk, the best kept secret this side of, well, anywhere. Granted, it may not look like much, but this wet heap of rock packs more than a few surprises. Life here is amazing, just not for the faint of heart. You see, where most folks enjoy hobbies like whittling or needlepoint, we Berkians prefer a little something we like to call... DRAGON RACING!
Valka: [to Hiccup; proudly] All this time, you took after me.
[guilty]
Valka: And... where was I? I'm so sorry, Hiccup. Can we start over? Will you give me another chance?
[Hiccup gently smiles as if to forgive her]
Valka: I... I can teach all that I've learned these past twenty years, like...
[presses her fingers into Toothless's neck, making his back spikes split in half]
Hiccup: Wow.
Valka: Now you can make those tight turns!
Hiccup: [to Toothless] Did you know about this?
Valka: [laughs] Every dragon has its secrets. And I'll show them all to you! We'll unlock every mystery, find every last species together, as mother and son!
[She and Hiccup laugh as they watch their dragons play]
Valka: This gift we share, Hiccup, it bonds us. This is who you are, son. Who WE are. And we will change the world for all dragons. We will make it a better, safer place.
Hiccup: [excitedly] Yeah! I mean, that sounds... amazing!
[Overjoyed, Valka hugs a surprised Hiccup, who quickly returns the embrace]
Hiccup: [follows Valka through the cave] Uh, hold-hold on! Wait just a minute!
Valka: This way!
Hiccup: Come back here!
Valka: Come!
Hiccup: You can't just say something like that and run off! You're my MOTHER? I mean, what the...? Do you... do you grasp how insane it sounds?
Valka: Come! Quickly!
Hiccup: I have questions! Where have you been all this time? What have... what have you been doing? Huh? They-they said you were dead! EVERYONE thinks you were eaten by...
[finally exits the cave, sees Valka's dragon sanctuary, and is overcome by its beauty]
Astrid: [hits Snotlout on the helmet] What are you doing, Snotlout? They're gonna win now!
Snotlout: She's my princess! Whatever she wants, she gets!
Astrid: [confused] Ruffnut? Didn't she try to bury you alive?
Snotlout: Only for a few hours!
Ruffnut: Hey, watch it! That was close...
[Ruffnut sees Eret]
Ruffnut: [slow motion] Oh, my... Me likey.
[Eret shoots the dragon trap at the Zippleback]
Ruffnut: Take me.
Hiccup: [narrating] Now dragons used to be a bit of a problem here, but that was five years ago. Now they've all moved in. And, really, why wouldn't they? We have custom stables, all-you-can-eat feeding stations, a full-service dragon wash, even top-of-the-line fire prevention, if I do say so myself.
Tuffnut: I'll bloody his fist with my face if he tries to take my dragon!
Ruffnut: Or mine!
Tuffnut: Eh, you're such a moron.
Fishlegs: [pokes Ruffnut seductively] A beautiful moron.
Snotlout: [also pokes Ruffnut seductively] Yeah.
Astrid: I don't like it. They should have been back with Hiccup by now.
Ruffnut: I don't like it either. Eret, Son of Eret, was the man of my dreams. My everything!
Snotlout: [touches his beard] But, baby, I grew facial hair for you.
Fishlegs: [also touches his beard] Me, too.
Snotlout: [to Ruffnut] Here you go, babe. Did I tell you that you look amazing today? 'Cause you do.
Eret: [to Drago, after the dragon riders have been captured] They wouldn't know where you're hiding. I promise you that.
Astrid: Oh, yes, they will! They know we're missing and they have tracking dragons. If you so much as touch us, Hiccup is gonna kick...
Drago: Hiccup?
Eret: He's no problem. Really. Trust me.
Astrid: He's only the son of Stoick the Vast, his heir to the throne of Berk, and the greatest dragon master this world has ever seen!
Drago: Dragon master? I alone control the dragons!
Tuffnut: Nope, mm-mm.
Fishlegs: SORRY!
[the dragon riders laugh]
Astrid: And unless you let us go, right now, he will blast through here on his Night Fury and blow your entire fleet of ships to splinters.
Ruffnut: Then they'll be crying like babies!
Hiccup: [as Stoick drags him through the cave] Uh, wait! Okay, uh, Dad, there-there's something you need to know!
Stoick the Vast: [impatiently] Yeah, yeah. Tell me on the way.
Hiccup: No, this isn't an on-the-way kind of update, actually.
Stoick the Vast: [stubbornly] I've heard enough!
Hiccup: More of the earth-shattering-development variety.
Stoick the Vast: Yeah, just add it to the pile.
Hiccup: Yeah, I, uh, uh... Dad, u-unlike most surprises I spring on you, this is one you'll like. I-I promise. You just have to handle it... delicately. So...
[They reach a stunned Gobber]
Gobber: [to Stoick] Uh, you might want to take this one.
Stoick the Vast: Huh?
[draws his sword]
Gobber: Oh, boy.
Hiccup: [fearful] Oh, uh, Dad, could you put the sword away, please?
[Stoick finally sees Valka and gasps. Gobber and Hiccup watch as Stoick drops his sword, removes his helmet, and slowly and silently advances toward Valka]
Valka: I know what you're gonna say, Stoick. How could I have done this? Stayed away all these years? And why didn't I come back to you? To our son? Well, what sign did I have that you could change, Stoick? That anyone on Berk could? I pleaded so many times to stop the fighting, to find another answer, but did any of you listen?
Gobber: [aside, to Hiccup] This is why I never married. This and one other reason.
Valka: I know that I left you to raise Hiccup alone, but I thought he'd be better off without me. And I was wrong. I see that now! But...
[nervously backs up against the wall; on the verge of tears]
Valka: Oh, stop being so stoic, Stoick! Go on! Shout! Scream! Say something!
[Stoick touches Valka's cheek. She stares at him in fear]
Stoick the Vast: [also on the verge of tears] You're as beautiful as the day I lost you.
[Valka quietly weeps in relief; Stoick softly kisses her. A relieved and overjoyed Hiccup smiles]
Drago: [to Hiccup, after he miraculously returns to Berk] You certainly are hard to get rid of, I'll say that.
Hiccup: [trying to bring Toothless out of his trance] Toothless? Hey, it's me, bud. It's me. It's me, I'm right here, bud. Come back to me.
Drago: [chuckles evilly] He's not yours anymore. He belongs to the Alpha!
Drago: [mockingly] But, please, O great Dragon Master, TRY to take him. He will not miss a second time.
Hiccup: It wasn't your fault, bud. They... made you do it. You'd never hurt him. You'd never hurt me.
[Hiccup puts a hand on Toothless's head; Toothless immediately starts to calm down]
Drago: [shocked] How are you doing that?
Hiccup: [in tears] Please, you... are my best friend, bud. My best friend.
Gobber: [about riding baby dragons inside an ice mountain] Some might suggest this is poorly conceived!
Hiccup: Well, it's a good thing that I never listen.
[an ice wall splits them up]
Gobber: Whoa! So...
[he pauses for the ice wall]
Gobber: ... what is your...
[ice wall]
Gobber: ... plan?
Hiccup: Get Toothless back and kick Drago's...
[the ice wall catches the rest of his sentence]
Hiccup: [after Valka tells her story] How did you survive?
Valka: Oh, Cloudjumper never meant to harm me. He... must've thought I belonged here.
[shows Hiccup the Bewilderbeast]
Valka: In the home of the great Bewilderbeast. The alpha species. One of the very few that still exist. Every nest has its queen, but this is the KING of all dragons. With his icy breath, this graceful giant built our nest, a safe haven for dragons everywhere.
Hiccup: [surprised] Wait, that's the ice-spitter? HE'S responsible for all that destruction?
Valka: He protects us. We all live under his care and his command.
[a group of baby dragons gang up on Toothless]
Valka: All but the babies, of course...
[Cloudjumper scares them off and they fly away to pester the Bewilderbeast. Valka giggles]
Valka: ...who listen to no one!
Snotlout: Could this day get any worse?
Tuffnut: Uh, lemme see: We're jumpin' in freezing cold water, and then die from drowning.
Eret: [sarcastically] Looks refreshing.
Valka: Never take a toy from a dragon. Don't you know anything?