12-year-old Josh wishes he was 'big' and wakes up to find that overnight he has developed into an adult male (Tom Hanks). Kicked out of home by his mother, who doesn't believe his story, man-child Josh quickly gets a job developing new ideas for toys, with much success. He also finds himself successful with women - something he isn't quite ready to handle!

12-year-old Josh wishes he was 'big' and wakes up to find that overnight he has developed into an adult male (Tom Hanks). Kicked out of home by his mother, who doesn't believe his story, man-child Josh quickly gets a job developing new ideas for toys, with much success. He also finds himself successful with women - something he isn't quite ready to handle!