A self-serving mythical creature's bid for invincibility backfires when he finds himself at the mercy of a woman who can see otherworldly beings.
Episodes
Episode 1
While fulfilling her part of the deal with a so-called "fairy," young Seon-mi makes a critical mistake that catches up with her 25 years later.
Episode 2
Desperate for help in dealing with O-gong, Seon-mi seeks out Devil King Woo, who, as the head of an entertainment agency, is judging for an audition.
Episode 3
As Geumganggo works its magic on O-gong, he gets frustrated by the conflicting feelings he has toward Seon-mi. Meanwhile, a young woman goes missing.
Episode 4
To get O-gong off his back, Devil King is forced to make a big compromise. O-gong brings something -- or someone -- very stinky to Devil King's house.
Episode 5
Devil King donates an object of cultural importance to a museum, where historical artifacts on exhibit still bear the souls of the original owners.
Episode 6
Loyal Ms. Ma can't allow herself to just watch as Devil King suffers. Seon-mi feels torn as she knows all too well that O-gong's love isn't real.
Episode 7
Devil King Woo seeks Seon-mi's help in dealing with a troublesome prince who refuses to return home until he finds a runaway mermaid.
Episode 8
When the plan to make O-gong jealous misfires, Devil King shows Seon-mi something to provoke her. An evil spirit is using social media to spread hate.
Episode 9
Seon-mi can't stop thinking about the moment the bell rang and what it means for her. An evil spirit is suspected of stealing children's souls.
Episode 10
The fulfillment of Seon-mi's wish to be ordinary has far-reaching consequences on not only O-gong but also Devil King Woo, Richie and even Pal-kye.
Episode 11
An assailant attacks Devil King Woo at a torch relay. Richie prepares to say her goodbyes. Ms. Ma finds out that a black bell has gone missing.
Episode 12
O-gong realizes that the Geumganggo has the power to take his life. Kang Dae-seong devises a plan to get rid of his annoyances altogether.
Episode 13
Asanyeo pursues what she didn't achieve more than 1,000 years ago. Aware of Devil King Woo's weakness, she decides to use it to her advantage.
Episode 14
Relentless in her desire to be stronger, Asanyeo orders General Winter to get her incense burner back. Seon-mi mentions the love bell to O-gong.
Episode 15
To avoid exacerbating the dilemma regarding Asanyeo, O-gong must pretend not to know the truth, and General Winter must be found as soon as possible.
Episode 16
In an uncanny dream, a woman shows O-gong the moment that Samjang was born. Asanyeo demonstrates what she's capable of doing for Kang Dae-seong.
Episode 17
O-gong refuses to accept his and Seon-mi's fates. Devil King Woo wants to believe Asanyeo despite others' warnings that he's being deceived.
Episode 18
As O-gong prepares to sacrifice himself in place of Seon-mi, Devil King Woo, feeling sorry for both, tries to solve the mystery behind the Geumganggo.
Episode 19
While Seon-mi is away at the Lotus Village trying to figure out exactly what her mission is, O-gong hurries to begin the ritual to summon the dragon.
Episode 20
Both the Spiritual Realm and Devil King Woo try to get O-gong to come out of Sureumdong, where he's shut himself in after the fateful day.
Top Cast
Lee Seung-gi
Son O-gong
Cha Seung-won
Devil King Woo / Woo Hwi
Oh Yeon-seo
Jin Seon-mi / Samjang
Lee Hong-gi
Jeo Pal-kye / PK
Jang Kwang
Sa O-jeong / Yun Dae-shik
Lee El
Ms. Ma Ji-young
Lee Se-young
Jung Se-ra / Richie / Zombie / Asanyeo
Kim Seung-o
Lee Han-ju
Sung Hyuk
General Winter / Summer Fairy
Yoon Bo-ra
Alice / Jade Dragon
