When does Descendants: School of Secrets return?

Descendants is an American musical fantasy television film. The film stars Dove Cameron, Sofia Carson, Booboo Stewart, and Cameron Boyce as the teenage children of Maleficent, the Evil Queen, Jafar, and Cruella de Vil. It debuted on July 31, 2015, as a Disney Channel Original Movie, to positive reviews and 6.6 million viewers.