It's October, Houston Tally, a boy living in a New Jersey farm town, wants a rabbit he calls ""Harvey."" To win the rabbit, he has to collect more aluminum cans than anyone else in his class. Houston knows he doesn't have enough cans yet, but he gets confused with the question, ""How many more cans?"" His brother has to teach him that ""more"" is actually a key word that tells one to subtract, not add.