The Legend of the Blue Sea (2016)

How can a mermaid from the Joseon era survive in modern society?

Shim Cheong (Jun Ji Hyun) is a mermaid who follows her one true love, a nobleman’s son named Kim Moon from the Joseon Dynasty, to modern-day Seoul. Moon’s modern doppelgänger is Heo Joon Jae (Lee Min Ho), a highly skilled scam artist who first becomes interested in Shim Cheong because of a jade bracelet worth $6 million that Shim Cheong wears.

With nowhere to go, Shim Cheong is taken in by Joon Jae, who also finds his con partners, Jo Nam Doo (Lee Hee Joon) and Tae Oh (Shin Won Ho), hiding out in his home from a vengeful past victim of their scams. Shim Cheong discovers a rival for Joon Jae’s heart in Cha Shi Ah (Shin Hye Sun), a researcher at KAIST who deals with ancient artifacts.