The Legend of the Blue Sea

Season 1

How can a mermaid from the Joseon era survive in modern society? Sim Chung is a mermaid who follows her one true love, a nobleman’s son named Kim Dam-Ryung from the Joseon Dynasty, to modern-day Seoul. Dam-Ryung’s modern doppelgänger is Heo Joon-Jae, a highly skilled scam artist who first becomes interested in Sim Chung because of a jade bracelet worth $6 million that Sim Chung wears. With nowhere to go, Sim Chung is taken in by Joon-Jae, who also finds his con partners, Jo Nam-Doo and Tae-O, hiding out in his home from a vengeful past victim of their scams. Sim Chung discovers a rival for Joon-Jae’s heart in Cha Si-A, a researcher at KAIST who deals with ancient artifacts. When a dangerous killer named Ma Dae-Young, sent by Joon-Jae’s stepmother who wants to make her own son the heir to Joon-Jae’s fortunes, can Sim Chung survive her strange new environment while also helping Joon-Jae avoid the dangers that await him?

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60 Episodes

Episode 1
E1
Episode 1In 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.
It’s Pretty
E1
It’s PrettyIn the year 1598, Dam Ryeong stayed at Yang's house. At the little pond, he met mermaid's eyes. Dam Ryeong felt sorry for the mermaid so he sent mermaid to the sea under the guise of Yang's crime. Hence, their long relationship started.
Destiny
E1
DestinyAfter a successful job, con artist Joon-jae, while laying low meets a mermaid who's new on land.
Episode 2
E2
Episode 2Joon-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.
I Love You
E2
I Love YouJoon Jae becomes soft-hearted after seeing mermaid waiting for him so he brings the mermaid to his house. The mermaid is addicted to the new world of Joon Jae's laptop. Meanwhile, Joon Jae and the mermaid become fugitive due to the chase of Jin Ok.
Meet
E2
MeetJoon Jae becomes soft-hearted after seeing mermaid waiting for him so he brings the mermaid to his house. Mermaid is addicted to the new world of Joon Jae's laptop.
Episode 3
E3
Episode 3With 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.
A Mermaid’s First Visit to Seoul
E3
A Mermaid’s First Visit to SeoulJun Jae was left alone with a jade bracelet and a grain of pearl after falling from a cliff, he barely managed to arrive in Seoul and hurried in to resolve a fraud case of madam. Meanwhile, Mermaid begins a rough journey to Seoul to keep the promise.
Find Again
E3
Find AgainJun Jae was left alone with a jade bracelet and a grain of pearl after falling from a cliff, he barely managed to arrive in Seoul and hurried in to resolve a fraud case of madam. Mermaid begins a rough journey to Seoul to keep the promise.
Episode 4
E4
Episode 4At 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.
My Name is Sim Cheong
E4
My Name is Sim CheongJun Jae, who had never seen a mermaid before felt a strange sense of vision and helped her escape from the aquarium... On the other hand, a murder happened next door to Jun Jae while the whereabouts of Ma Dae-young is unknown for three months.
Premonition
E4
PremonitionJun Jae, who had never seen a mermaid before felt a strange sense of vision and helped her escape from the aquarium. On the other hand, a murder happened next door to Jun Jae while the whereabouts of Ma Dae-young is unknown for 3 months.
Episode 5
E5
Episode 5Joon-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.
The Year’s First Snow
E5
The Year’s First SnowJun Jae feels strange about himself having weird feeling toward Sim Cheong. He warns Sim Cheong that if she does not tell him what happened in Spain by tomorrow, she should leave home. Sim Cheong fall asleep with a wish that the next day would not come.
Reduplicate
E5
ReduplicateJun Jae feels strange about himself having weird feeling toward Sim Cheong. He warns Sim Cheong that if she does not tell him what happened in Spain by tomorrow, she should leave home.
Episode 6
E6
Episode 6Sim Chung is involved in a traffic accident. Joon-Jae rushes to the hospital to find her in critical condition.
Superwoman Sim Cheong
E6
Superwoman Sim CheongJun Jae fall in a panic state after seeing Cheong is bedridden at hospital emergency room. Chi Hyeon receives investigation at the hospital. Meanwhile, Nam finds a tape recorder that is attached to a black box inside of Chairman Huh's car.
Jealousy
E6
JealousyJun Jae fall in a panic state after seeing Cheong is bedridden at hospital emergency room. Chi Hyeon receives investigation at the hospital. Nam Doo finds a listening device inside of Chairman Huh's car.
Episode 7
E7
Episode 7Joon-Jae tells Sim Chung he loves her. Meanwhile, detective Hong comes across Dae-Young while investigating a murder.
Mermaid Friends
E7
Mermaid FriendsHaving lost the memory of Cheong in Spain, Jun Jae is confused by himself. He is caring about the presence of other man that Cheong speaks of. Meanwhile, detective Hong who has been looking for clues of the murder case encounters Ma Dae Young...
Jealousy For Love
E7
Jealousy For LoveHaving lost the memory of Cheong in Spain, Jun Jae is confused by himself. He is caring about the presence of other man that Cheong speaks of. Detective Hong who has been looking for clues of the murder case encounters Ma Dae Young.
Episode 8
E8
Episode 8Jung-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.
Kim Dam Ryung and Heo Jun Jae
E8
Kim Dam Ryung and Heo Jun JaeCheong feels annoyed by Jung Hoon's advice so she asks bold questions to Jun Jae. On the other hand, Jun Jae felt strange about Nam's loss of communication. He contacted Nam again and Ma Dae Young receives the call...
Sincere
E8
SincereCheong feels annoyed by Jung Hoon's advice so she asks bold questions to Jun Jae. On the other hand, Jun Jae felt strange about Nam's loss of communication. He contacted Nam again and Ma Dae Young receives the call.
Episode 9
E9
Episode 9Joon-Jae finally faces off with his pursuer Dae-Young. He suffers a major injury and confesses his feelings to Sim Chung before losing consciousness.
Jun Jae and His Crew
E9
Jun Jae and His CrewJun Jae is relieved to know that Cheong is with him now and looks after him. Meanwhile, Jun Jae is confused when it is discovered that the man who threatened him was an excaped prisoner, Ma Dae Young. Furthermore, He even approached Cheong also...
Reveal
E9
RevealJun Jae is relieved to know that Cheong is with him now and looks after him. Meanwhile, Jun Jae is confused when it is discovered that the man who threatened him was an escaped prisoner, Ma Dae Young.
Episode 10
E10
Episode 10In 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.
Identity of Kim Dam Ryung
E10
Identity of Kim Dam RyungJun Jae is increasingly troubled by Kim Dam Ryeong's identity who continues to appear in his dream and send messages. Meanwhile, Jun Jae and Nam Doo receive invitation from Jin Joo as planned.
Altruism
E10
AltruismJun Jae is increasingly troubled by Kim Dam Ryeong's identity who continues to appear in his dream and send messages. Meanwhile, Jun Jae and Nam Doo receive invitation from Jin Joo as planned.
Episode 11
E11
Episode 11Sim Chung leaves the house after learning Joon-Jae is a conman. In a panic, Joon-Jae desperately searches for her.
Con Artist
E11
Con ArtistFinding out that Jun Jae is a swindler, Cheong leaves home in disappointment and Jun Jae focuses on finding Cheong. Meanwhile, detective Hong who is chasing after Ma Dae Young finds out about Ma's new past, and tries to speed up the investigation.
Hurt
E11
HurtFinding out that Jun Jae is a swindler, Cheong leaves home in disappointment and Jun Jae focuses on finding Cheong. Detective Hong who is chasing after Ma Dae Young finds out about Ma's new past, and tries to speed up the investigation.
Episode 12
E12
Episode 12Joon-Jae is arrested by detective Hong. When Sim Chung realizes they are in danger, she tracks them down.
She’s in Danger
E12
She’s in DangerJin Joo feels frustrated that the investment was not carried out properly so she decides to meet Seo Hee again. On the other hand, Jun Jae is caught by detective Hong and he made a call to Cheong but no one answers the call.
Sweet
E12
SweetJin Joo feels frustrated that the investment was not carried out properly so she decides to meet Seo Hee again. On the other hand, Jun Jae is caught by detective Hong and he made a call to Cheong but no one answers the call.
Episode 13
E13
Episode 13Joon-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.
Something Suspicious
E13
Something SuspiciousSi Ah visits Jun Jae's house together with Yu Ran to win the favor of Jun Jae who likes the food cooked by Yu Ran. Meanwhile, Jun Jae discovers something strange when he is moving with the detectives to find evidence that Ma Dae Young kidnapped Cheong.
Episode 13
E13
Episode 13Jun Jae discovers something strange when he is moving with the detectives to find evidence that Ma Dae Young kidnapped Cheong.
Episode 14
E14
Episode 14With 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.
A Chance
E14
A ChanceWith the help of Professor Jin, Jun Jae finds out that he is on the same path as his previous life so he decides to protect Cheong. Meanwhile, Yu Ran finds out that Jun Jae has ran away from home when he was in high school and visits Seo Hee with rage.
Episode 14
E14
Episode 14Jun Jae finds out that he is on the same path as his previous life so he decides to protect Cheong. Yu Ran finds out that Jun Jae has ran away from home when he was in high school and visits Seo Hee with rage.
Episode 15
E15
Episode 15Sim 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.
I Can’t Live without You
E15
I Can’t Live without YouHaving learnt about Cheong's terminally ill heart, Jun Jae could not conceal his melancholy so he tries to tell her about what he saw in his dream. Meanwhile, Cheong decides her birthday and invites all her best friends.
Episode 15
E15
Episode 15Having learned about Cheong's terminally ill heart, Jun Jae could not conceal his melancholy so he tries to tell her about what he saw in his dream. Meanwhile, Cheong decides her birthday and invites all her best friends.
Episode 16
E16
Episode 16Joon-Jae and Yoo-Ran have an emotional reunion at Sim Chung's birthday party. Joon-Jae learns why Dae-Young has been chasing him.
Real Identity of Kang Ji Hyeon
E16
Real Identity of Kang Ji HyeonJun Jae and Yu Ran, whom they met again, talk each other regarding their past time. Nam Doo who was curious about Kang Ji Hyun(Seo Hee), asks Yu Ran about her. In the meantime, Chi Hyeon starts asking Seo Hee about his biological father.
Episode 16
E16
Episode 16Jun Jae and Yu Ran are reunited and discuss what happened in their lives while they were apart. Nam Doo, who was curious about Kang Ji Hyun (Kang Seo Hee), asks Yu Ran about her. Chi Hyeon starts asking Seo Hee about his biological father.
Episode 17
E17
Episode 17After 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.
I Don’t Want You to Hear My Thoughts
E17
I Don’t Want You to Hear My ThoughtsWhen Cheong sees the end of her previous life with Jun Jae, she becomes confused and tries not to reveal her thoughts to Jun Jae. Meanwhile, Jun Jae starts gathering the evidence of eccentric Seo Hee to bring back his father from her.
Episode 17
E17
Episode 17After Cheong sees the end of her previous life with Jun Jae, she becomes confused and tries to conceal her thoughts from him. Meanwhile, Jun Jae starts gathering evidence that Seo Hee is harming his father in order to protect him from her.
Episode 18
E18
Episode 18After 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.
Friend or Betrayer
E18
Friend or BetrayerAfter Chairman Huh's death, Jun Jae and detective Hong speed up their investigation and begin searching for evidence after receiving a search warrant of Kang Ji Hyun(Seo Hee). Meanwhile, Chi Hyeon approaches Nam Doo to suggest joining him.
Episode 18
E18
Episode 18Detective Hong, with the assistance of Jun Jae and Shim Chung, searches for evidence that Kang Ji Hyun murdered Jun Jae's father. Meanwhile, Chi Hyun approaches Nam Doo to suggest joining him. Ji Hyun and Chi Hyun plot Jun Jae's murder.
Episode 19
E19
Episode 19Chi-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.
I Will Protect You This Time
E19
I Will Protect You This TimeJun Jae suffers from unexpected circumstances that Cheong is unconscious after being shot instead of Jun Jae. Meanwhile, Ma Dae Young who lost his memory can not stand the loss of his memory so he tries to visit the professor Jin to find his memory back.
Episode 19
E19
Episode 19After Shim Chung is shot while defending Jun Jae, he stands vigil by her at the hospital. Professor Jin alerts Jun Jae that Ma Dae Young plans to visit his office for treatment of his amnesia. Jun Jae then alerts the police.
Final
E20
FinalSim 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...
There is No Way I Could Forget You
E20
There is No Way I Could Forget YouCheong visits the people around her and says farewell before returning to the sea. Meanwhile, Jun Jae embarrasses the people around him with unexpected acts when Cheong has left from him.
Final
E20
FinalAt the urging of Jun Jae, Shim Chung returns to the sea to prevent her death. She erases the memories of those who know her as she departs. Once she recovers from her injuries, she returns to Seoul. Jun Jae explains why he remembers her.