Shortly after Hercules was born Hades saves a girl that has powers and raises her as his own. Now that Hercules is in school he sends his daughter to go and befriend him.

Harmony is one of the 5 kids from Isle of the Lost. She is a total daddy's girl and would do anything for him even if she has to burn down Auradon. How will she and her friends handle being in a new place? How will she be without her father for the very first time?