Follows best friends Maddie and Trish as they find themselves trapped in a remote lagoon with the dangerous killer whale named Ceto.

In a small town on Christmas Eve, a snowstorm brings together a group of young people. They soon find their friendships and love lives colliding, and come Christmas morning, nothing will be the same.

When the pressure to be royal becomes too much for Mal, she returns to the Isle of the Lost where her archenemy Uma, Ursula's daughter, has taken her spot as self-proclaimed queen.