Starring: Lee Min-ho, Jun Ji-hyun

“Some destinies are written in the stars… others are carved in the waves.”

Years after sacrificing their love to protect both worlds, Joon-jae’s long-forgotten memories begin to resurface as strange tidal anomalies strike Seoul. A mysterious woman, identical to Shim Cheong, emerges carrying a shattered pearl and a dire warning: the sea is dying — and with it, every mermaid.

As past lives collide with an even darker present, ancient hunters return, driven by their obsession with mermaid blood and its forbidden power. To save her — and the love they once shared — Joon-jae must unlock the final piece of his heart before time, and the tide itself, runs out.

Visually enchanting and emotionally deeper than ever, Season 2 raises the stakes with richer mythology, breathtaking underwater sequences, and a heart-wrenching romance that tests the limits of love, forgiveness, and memory across lifetimes.