Wyatt Bernstein (Cole Jensen) is reluctantly taken to a Build-A-Beastie store for his birthday, and while there, creates a boy filled version of a Beastie, a puppet he names Crash, who comes to life as the brother he always wanted.
Crash finds Wyatt living in a household of sisters, including popular 16 year-old Amanda (Oana Gregory), fashion-forward middle sister Cleo (Landry Bender), and assertive 6-year-old Jasmine (McKenna Grace), so he comes up with a plan to help Wyatt get his own room. But Crash's plan soon backfires, jeopardizing the relationship with his new brother.
