Four children of famous villains: Mal, Carlos, Evie and Jay are now studying in Auradon, having abandoned their villainous past. Mel became Prince Ben's girlfriend, Evie became friends with Doug, Jay and Carlos play on the school sports team. And everything would be fine if one fine day the friends did not receive identical messages with orders to immediately return to the Island of the Lost. They begin to suspect that their parents are up to something. Mal, Carlos, Evie and Jay decide to return to the Island and find out what the villainous parents are up to. Will the friends be able to thwart the insidious plans of the greatest villains or will they side with them and Auradon will be doomed?