Cory winds up on a date with Harley's, T.K., when Amy challenges him to be polite for just one day and see where it gets him. And Harley is a bit overprotective of his sister...
It appears that Cory has a tough school year ahead of him in junior high, when he learns that Mr. Feeny is the school's new principal, and he also gets on the bad side of the school's bully, Harley.