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.
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Liam James
Duncan
Steve Carell
Trent Ramsey
AnnaSophia Robb
Susanna Thompson
Sam Rockwell
Owen
Allison Janney
Betty Thompson
Maya Rudolph
Caitlyn
Amanda Peet
Joan
Rob Corddry
Kip
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