In my trailer, I would use Buck being kidnapped and shipped to Alaska as my hook. Because of this event, life changes quickly for Buck, and he is presented with many challenges. I think people would want to figure out what happened to him after he was kidnapped
For example, in William Shakespeare’s play Hamlet, the protagonist experiences terrible events because of his indecisiveness, which troubles him while murdering his evil uncle. So, Hamlet’s struggle in dealing with the antagonist is what precedes the story.