In the 1970's, Dickie Roberts (David Spade) held the keys to success as a child star with a hit TV series. Now the only keys Dickie holds are the ones that start the customer's cars that he parks as a valet attendant for a Hollywood restaurant.
Desperate to revive his acting career, Dickie tries to audition for a role in Rob Reiner's new movie but the director doesn't believe Dickie is normal enough to play the part. Determined to get his role, Dickie hires a 'typical' family to give him the real-life upbringing he never had. But once Dickie moves in, the family's life becomes anything but normal, as Dickie unleashes his wild inner child... and learns in the process some unforgettable lessons about fame, fortune and true family values.