Steven and the Crystal Gems have plenty of experience saving the day, but when the beach is vandalized overnight, they'll have to step up and keep cleaning the beach while finding the culprit...or else Kofi and the others on the Boardwalk won't get customers! As Steven, Garnet, Amethyst, and Pearl get closer in their investigation, they get help from an unlikely source and discover a truth they thought the Crystal Gems had long since buried.