Lexi is cursed with a dark secret. Each day she goes to school like a normal teenager, and each night she must swim, or the pain will be unbearable. She is a siren - a deadly mermaid destined to lure men to their watery deaths. After a terrible tragedy, Lexi shut herself off from the world, vowing to protect the ones she loves. But she soon finds herself caught between a new boy at school who may have the power to melt her icy exterior, and a handsome water spirit who says he can break Lexi's curse if she gives up everything else. Lexi is faced with the hardest decision she's ever had to make: the life she's always longed for - or the love she can't live without?