This bittersweet story of childhood innocence and friendship stars Robin Williams as Jack Powell, a boy who grows four times faster than normal. By the time Jack reaches his 10th birthday, he looks like a 40-year-old man. After years of being tutored at home by Mr. Woodruff (Bill Cosby), Jack convinces his overprotective parents (Diane Lane and Brian Kerwin) to send him to public school. The children are less than friendly, but with the help of his fifth grade teacher (Jennifer Lopez), Jack wins the kids over. Robin Williams is heartbreaking as a 10-year-old overcoming a unique physical disability.