To graduate, Caleb teaches a beautiful mermaid how to find a mate. But his innocent courtship lessons backfire when she claims him as her own! Worse, she's no ordinary mermaid—she's a deadly siren who kidnaps him and refuses to let him go. As Caleb struggles to escape, forgotten memories reveal a shocking truth: she's been waiting ten years for him to return. What began as a terrifying mistake may become a love neither can escape.