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 Jae, a charming but cold con artist who is the doppelgänger for Kim Moon, the son of a nobleman from the Joseon Dynasty.
But in the present time, Joon Jae works with Jo Nam Doo, a skilled conman who guides Joon Jae to become a genius scammer. But Joon Jae’s friend, Cha Shi Ah, who works as a researcher at KAIST, may be Chung’s only hope for surviving in her strange new world.
Inspired by a classic Joseon legend from Korea’s first collection of unofficial historical tales, about a fisherman who captured and kidnapped a mermaid, this drama tells the love story between the son of a Joseon noble family named Kim Dam Ryung (Lee Min-Ho) and a mermaid he named Se Hwa (Jun Ji Hyun). Sometime during August 1598, newly appointed governor, Kim Dam Ryung stays for a night at an inn run by Lord Yang (Sung Dong-Il).
During that evening, Lord Yang shows Dam Ryung a captured mermaid named Se Hwa. Later that night, Dam Ryung releases her into the ocean and, before she swims away, Se Hwa reaches out her hand to Dam Ryung which he briefly holds. In the present day, Heo Joon Jae is a smooth-talking conman with magician like abilities.
He works with Jo Nam Doo and Tae Oh. For their next score, Joon Jae impersonates a prosecutor and swindles a large amount of money from a wealthy suspect’s mother. Joon Jae then escapes to Spain and stays at an oceanside resort. Meanwhile, Shim Chung is a mermaid who gets caught in a tidal wave and is washed ashore near the oceanside resort. There she meets Joon Jae.The Legend of the Blue Sea 2016 IMDB