To protect her ex-boyfriend's company, Serene is pushed into a marriage with the merman Nerius—then tricked into treating her devoted husband like a monster. Driven by Drake's family's lies, she keeps hurting the one man who would have saved her. After Drake kills her, Nerius gives up his scales and his life to save her, turning to foam. Reborn on the night of the wedding, Serene sees too late that the love she destroyed was the one that never left.