Two 9-year-old step brothers attempt to brighten up their summer vacation by pulling off unbelievable and outlandish plans, while their 15-year-old sister tries to catch them in the act. Meanwhile, their pet platypus is a secret agent sent to stop the evil plans of a mad scientist.
Jenna Ortega
Victoria Justice
Rudy Pankow
Katherine McNamara
Amy Adams
Thomas Brodie-Sangster
David Tennant
Lana Condor
Jim Carrey
J.K. Simmons
Thomas Barbusca
Taika Waititi
Rohan Chand
Jeremy Ray Taylor
Sabrina Carpenter
Alec Baldwin
Chris Colfer
John James Cronin
Dee Bradley Baker
Burt Young
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