Underwater hull cleaner Evelyn spends seven years supporting her fiancé Greg, only to be publicly humiliated and thrown into the stormy sea after he gets engaged to maritime heiress Victoria. On the brink of death, she awakens "Ocean Sight"—the supernatural ability to see rare marine life, sunken treasures, and hidden shipwrecks beneath the waves. To save her family's dock from foreclosure, she harvests rare pearls, unearths a museum-grade Megalodon fossil, and catches the eye of billionaire maritime CEO Julian, who gladly becomes her loyal partner and first mate. When Greg colludes with pirates to ambush her at the legendary Santa Reina shipwreck, Evelyn and Julian turn the tables—sending her ex to prison, acquiring her rival's family empire, and transforming Evelyn from a lowly boat cleaner into the undisputed Queen of the Sea.