After their marriage, the Beast (Dan Payne) and Belle (Keegan Connor Tracy) unite all the settings of famous fairy tales into the United States of Auradon, and are elected King and Queen. The villains and their associates (some of which have been revived after their deaths) are imprisoned on the Isle of the Lost, a slum-like island prison that is surrounded by a barrier that prevents the use of magic.
20 years later, the Beast and Belle's son Prince Ben (Mitchell Hope) is soon to be crowned the next king of Auradon. His first proclamation is to invite four teenagers from the Isle of the Lost to attend his school Auradon Prep. His parents are skeptical, but accede to give the children a chance. The four children Ben invites are: Carlos (Cameron Boyce), son of Cruella de Vil (Wendy Raquel Robinson); Jay (Booboo Stewart), son of Jafar (Maz Jobrani); Evie (Sofia Carson), daughter of the Evil Queen (Kathy Najimy); and Mal (Dove Cameron), daughter of Maleficent (Kristin Chenoweth).