In Urbania, Ohio, snobby ex-football star Kevin O'Shea conducts try-outs for the town's Peewee football team, the Urbania Cowboys, which will compete for a chance at the state Peewee football playoffs. Kevin slights his younger brother Danny O'Shea by rejecting Danny's daughter Becky "Icebox" O'Shea, who is a good player. Kevin rejected her simply because she's a girl. Becky and some of her friends, boys who were also rejected, get the idea to start up their own team, to be coached by Danny....

The movie is about a boy with a unique aging disorder: one that makes him age 4 times faster than normal. It picks up when Jack (Robin Williams) is 10 years old, but looks 40. He tries to go to public school for the first time, and to become friends with kids his own age. His physical appearance causes him lots of problems, however.