"Descendants 2" will air July 21 on ABC, the Disney Channel, Lifetime, Freeform and Disney XD, as well on all of the network's apps.
The original, a film about the teenage sons and daughters of some notorious Disney villains, ranked as the fifth most-watched cable TV movie when it came out two years ago.
The enthusiasm for the film is unlike anything they've seen since "High School Musical," Disney executive Gary Marsh said.
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