Seasons & episodes
S0 · E1The Legend Continues 2016-12-29 · 60 min
SBS announced that on December 29, it will not be airing the drama’s 14th episode. Instead, a special feature that stitches together popular scenes from the first 13 episodes will be shown. Focusing on the relationship between Jun Ji-hyun and Lee Min-ho that transcends time, the special episode will be formatted like a director’s cut version of the drama.
S1 · E1Episode 1 2016-11-16 · 59 min
In 1958, the nobleman Dam-Ryung releases a mermaid back into the ocean. In present-day Seoul, the figure of conman Joon-Jae stands on the same spot.
S1 · E2Episode 2 2016-11-17 · 59 min
Joon-Jae brings a beautiful woman back to his hotel, unaware that she's a mermaid. Jin-Ok realizes she's been scammed and sends men after Joon-Jae.
S1 · E3Episode 3 2016-11-23 · 58 min
With no memory, Joon-Jae finds himself alone on a beach next to a jade bracelet and a single pearl. Meanwhile, the mermaid crosses the ocean to Seoul.
S1 · E4Episode 4 2016-11-24 · 58 min
At the aquarium, Joon-Jae runs into a woman being chased by security. Feeling a sense of déjà vu, Joon-Jae rescues her and brings her home.
S1 · E5Episode 5 2016-11-30 · 58 min
Joon-Jae lives with the woman who he names Sim Chung. Fugitive Dae-Young has been on the run for 3 months when a murder occurs near Joon-Jae's house.
S1 · E6Episode 6 2016-12-01 · 59 min
Sim Chung is involved in a traffic accident. Joon-Jae rushes to the hospital to find her in critical condition.
S1 · E7Episode 7 2016-12-07 · 59 min
Joon-Jae tells Sim Chung he loves her. Meanwhile, detective Hong comes across Dae-Young while investigating a murder.
S1 · E8Episode 8 2016-12-08 · 59 min
Jung-Hoon teaches Sim Chung that jealousy is the way to a man's heart. Meanwhile, Joon-Jae sees an image of a man with a mermaid on an ancient vase.
S1 · E9Episode 9 2016-12-14 · 59 min
Joon-Jae finally faces off with his pursuer Dae-Young. He suffers a major injury and confesses his feelings to Sim Chung before losing consciousness.
S1 · E10Episode 10 2016-12-15 · 59 min
In a museum, Joon-Jae sees a figure in a painting that looks just like him. Unable to identify the figure as Dam-Ryung, he grows distraught.
S1 · E11Episode 11 2016-12-21 · 59 min
Sim Chung leaves the house after learning Joon-Jae is a conman. In a panic, Joon-Jae desperately searches for her.
S1 · E12Episode 12 2016-12-22 · 59 min
Joon-Jae is arrested by detective Hong. When Sim Chung realizes they are in danger, she tracks them down.
S1 · E13Episode 13 2016-12-28 · 59 min
Joon-Jae is still having strange dreams. Sim Chung hears Joon-Jae say the name Se-Hwa in his sleep. She asks him who he is talking about.
S1 · E14Episode 14 2017-01-04 · 60 min
With Professor Jin's help, Joon-Jae learns he is an ancestor of Dam-Ryung. To avoid a tragic fate, he decides to protect Sim Chung whatever it takes.
S1 · E15Episode 15 2017-01-05 · 60 min
Sim Chung's heart will stop without Joon-Jae's love. Upon learning this, Joon-Jae talks about his dreams and finding out that Sim Chung is a mermaid.
S1 · E16Episode 16 2017-01-11 · 61 min
Joon-Jae and Yoo-Ran have an emotional reunion at Sim Chung's birthday party. Joon-Jae learns why Dae-Young has been chasing him.
S1 · E17Episode 17 2017-01-12 · 60 min
After almost being caught by Dae-Young, Sim Chung erases his memory. In the process, she witnesses the final moments of Dam-Ryung and Se-Hwa.
S1 · E18Episode 18 2017-01-18 · 62 min
After Il-Joong's death, detective Hong gets a warrant to search Seo-Hee for evidence. Meanwhile, Chi-Hyun threatens Nam-Doo to get him to cooperate.
S1 · E19Episode 19 2017-01-19 · 60 min
Chi-Hyun points a gun at Joon-Jae, but Sim Chung jumps in front and is shot. She slips into a coma, causing Joon-Jae to fall into despair.
S1 · E20Final 2017-01-25 · 61 min
Sim Chung erases Joon-Jae's memory and returns to the ocean. When Joon-Jae wakes up, there's only a single pearl next to him. Three years pass...