Astrid: Careful with that dragon.
Hiccup: [looking at his father] It's... not the dragon I'm worried about.
Astrid: What are you gonna do?
Hiccup: Put an end to this. I have to try. Astrid, if something... goes wrong, just make sure they don't find Toothless.
Astrid: I will. Just... promise me it won't go wrong.