Berk searches for an alternate source of supplies after discovering Johann's true nature.
- Alike and Antithetical Adversaries: Homogeneous Villains. Hiccup and Stock eventually figure out that the traders they left at Berk were working for the Dragon Hunters when they noticed the only fish they all had were ice tail pike, the kind of fish Singetails eat.
- All Your Base Are Belong to Us: Krogan seizes Berk while Hiccup and Stoick are out searching for supplies. They return to drive him off before he can dig in.
- Crazy-Prepared: Gobber keeps a blade in his peg-leg for energies, having been given it by Hiccup on his last birthday.
- Did Not Think This Through: Discussed. Hiccup wanted to test the food Johann delivered to see what was safe to eat, though he later admits he didn't have a way to check for poison.
- Exposition Cut: Doubles as a Gilligan Cut when Hiccup tells Stoick about Johann's treachery after hoping he already knew about it. He didn't.Stoick: AAAAAHHHH!! I'll split [Johann's] bony butt in two!! (continues to scream like a berserker)Ruffnut: I'm gonna go out on a limb and guess this is the first the Chief's hearing of this.
- A Friend in Need: They eventually solve their resource crisis by calling to Dagur for aid.
- Foreshadowing: A close look at the traders' inventories show they all carry ice tail pike, a rare fish merchants normally don't carry and is used to feed Singetail dragons.
- Internal Reveal: The reveal of Johann's treachery continues back to Berk from the riders. Stoick doesn't take it well at all.
- Jerkass Has a Point: While he could have been less of a dick about it, Stoick is right to criticize Hiccup for not getting rid of the food they had gotten from Johann, claiming that testing to see if the food was safe to eat was "only half a plan" and all it would do is kill the taste-tester if it was not safe to eat. He was also right about the other traders being spies for the Dragon Hunters, though he admits that he could have given them a chance given the situations they are in.
- Psychological Projection: When the two of them argue, Stoick accuses Hiccup of being too easily fooled by Johann, only for Hiccup to point out that he also trusted him while knowing him way longer than he did.
- Ramming Always Works: How Toothless deals with dragonproof metal coated ballista? By ramming it and knocking it over the edge.
- Revenge Before Reason: When Stoick finds out that Johann was a traitor, he becomes bitter and irritable throughout the whole episode. He has all the food and non-perishables ever brought to Berk by Johann, dismissing other traders as vultures and potential spies (something he was oddly right about), becomes spiteful and antagonistic to Hiccup when he tries to help, and flies off without a plan to find Johann (under the guise of getting medicinal bark). He eventually comes to his senses.
- Right for the Wrong Reasons: As soon as he meets the new traders, Stoick instantly accuses them of being spies. They are, but his conclusion was based on zero evidence at the time and came from nothing more than anger-fueled mistrust.
- There Is No Kill Like Overkill: How does Stoick gather bark? He uproots the whole tree and takes it all.
- Use Your Head: Stoick head-butts one of the Flyers before dumping him into the sea.
- During the battle to take back Berk, Toothless takes a page out of Stoick's book to headbutt the dragonproof ballista out of the arena and over the edge.
- Worthy Opponent: Despite wanting him as dead as the rest of the riders, Tuffnut and Ruffnut admit that Johann is a genius. They even refer to him as an enfant terrible (no relation to the trope of the same name though).