Opie's had it with his history homework, and misinterprets Andy's empathy as an excuse to skip it and lead his friends in revolt against their teacher, "Old Lady" Crump. When Miss Crump holds Andy responsible, he must find a way to motivate Opie and his pals.
Dick Tracy investigates the theft of a fortune of fur coats, a possible insurance swindle and several murders, all linked to 'The Claw', a huge thug who wears a hook in place of his right hand.
In this comedy, a bookish kid sister reads a psychology book and comes to believe that, according to the book, she is finally "grown up." To demonstrate her new maturity she begins chasing her big sister's fiance.