It's the first day of school, and Brisbane is reminded by his mom that if he does well, he'll grow up to be president. He'd rather be a streetcar conductor, actually. The local blacksmith tells him a story about a boy who got expelled for playing pranks on the teacher, and this suits Brisbane just fine. He proceeds to devise any number of bad deeds, culminating in bringing a mule into the classroom. Sure enough, he's sent away by Miss Crabtree. What he didn't consider was that he'd have to explain all of this to Mom.