Mal, Evie, Jay and Carlos make a plan to use their upcoming visit to the Isle of the Lost to help other villain kids attend Auradon Prep, while Uma teams up with Hades to bring down the barrier and get her revenge on Mal.
When King Triton's trident enters the Isle of the Lost, Mal, Evie, Carlos, and Jay devise a plan to find the magical object before Mal's wicked rival Uma can get her hands on it.