Serena hides her identity to support her husband Ethan for five years. On their anniversary, she catches him cheating with a socialite and is humiliated as "never good enough for high society." Heartbroken, she impulsively marries the mysterious Adrian—who turns out to be the Supreme Naval Commander and heir to an ancient deep-sea mermaid royal bloodline. Together, they reveal their true identities and crush their enemies. When Ethan finally realizes the woman he discarded is the true Queen of the Ocean, it's already too late.
