How can a mermaid from the Joseon era survive in modern-day Seoul? Shim Chung is a mermaid who finds herself transplanted to modern times. She is caught by Heo Joon…

A self-serving mythical creature’s bid for invincibility backfires when he finds himself at the mercy of a woman who can see otherworldly beings.

When Hye-Jung was young, her life was difficult. She was good at fighting, but also studied well. Overcoming her tough situation, she is now a doctor.