"Legacy of Olympus" is a magical, character-driven drama inspired by Once Upon A Time, but set in a universe where the heroes, villains, and demigods of Rick Riordan’s mythological world—the Riordanverse—are trapped in a mysterious town with no memory of their past lives. The story centers on Cassie Jackson, the adult daughter of Percy Jackson and Annabeth Chase, as she arrives in the cursed town of New Ithaca searching for her lost son. Unbeknownst to her, the town’s enigmatic mayor, Luke Castellan, holds the key to the curse, redemption, and the fate of all its inhabitants. Over the course of the series, secrets are unveiled, alliances shift, and the true architect of their misery—Kronos—lurks in the shadows.