Shy 14-year-old Duncan goes on summer vacation with his mother, her overbearing boyfriend, and her boyfriend's daughter. Having a rough time fitting in, Duncan finds an unexpected friend in Owen, manager of the Water Wizz water park.
Liam James
Duncan
Steve Carell
Trent Ramsey
Toni Collette
Pam
AnnaSophia Robb
Susanna Thompson
Sam Rockwell
Owen
Allison Janney
Betty Thompson
Maya Rudolph
Caitlyn
Amanda Peet
Joan
