Thirteen-year-old Maddie just wants her classmate Lucas to leave her alone. He keeps asking her out—as if she hasn't already said no a thousand times! Focusing on her competitive swim team, the Electric Eels, Maddie tries to ignore him, hoping he'll stop harassing her. But then, when someone starts sabotaging Maddie's family-owned pool—glass on the deck, ketchup in the pool, followed by a "code brown"—Maddie worries it's her "admirer" trying to get even. After Maddie's parents rule the problems at the pool just harmless pranks, Maddie and her best friend, Ez, decide to investigate on their own. Could it be Lucas? And how can Maddie get him to leave her alone once and for all? The future of the Electric Eels and Maddie's family legacy are on the line.