This is how I'd write the sequel to Descendants, even though I know what I write most likely won't happen in the actual sequel (assuming there will be one).

After Mal, Jay, Evie, and Carlos proved bad isn't always evil Prince Ben, with the help of Mal, decided to allow all children from the Isle of the Lost a chance here in Arudon. They agreed on bringing in nine more descendants. Carlos, Mal, Jay, and Evie all have to pitch in and help show these kids they aren't their parents. Of course nine on four isn't fair so they have a few Arudon Prep students to help. Will they be able to convince them all?