When Conor's parents give him a present of a cowboy suit he wants to wear it all the time. At school Conor is teased about his cowboy outfit, but he doesn't care. Then the other children in his class think it's great fun and they want to dress up too.

So their teacher decides that all the class may dress up on Fridays. Even Teacher dresses up -- as the sheriff! Conor's big sister is jealous, so she wears her magician's outfit to school -- but everyone else in her class is in uniform, until, of course, they too want to dress up. And all because of Conor and his cowboy suit!