While fulfilling her part of the deal with a so-called "fairy," young Jin Seon-mi makes a critical mistake that catches up with her 25 years later.

Desperate for help in dealing with Son Oh-gong, Seon-mi seeks out Demon King Woo (Woo Ma-wang), who, as the head of an entertainment agency, is judging for an audition.

As Geumganggo works its magic on Oh-gong, he gets frustrated by the conflicting feelings he has toward Seon-mi. Meanwhile, a young woman goes missing.

To get Oh-gong off his back, Demon King is forced to make a big compromise. Oh-gong brings something -- or someone -- very stinky to Demon King's house.

Demon King donates an object of cultural importance to a museum, where historical artifacts on exhibit still bear the souls of the original owners.

Loyal Ms. Ma Ji-young can't allow herself to just watch as Demon King suffers. Seon-mi feels torn as she knows all too well that Oh-gong's love isn't real.

Demon King seeks Seon-mi's help in dealing with a troublesome prince who refuses to return home until he finds a runaway mermaid.

When the plan to make Oh-gong jealous misfires, Demon King shows Seon-mi something to provoke her. An evil spirit is using social media to spread hate.

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.

The fulfillment of Seon-mi's wish to be ordinary has far-reaching consequences on not only Oh-gong but also Demon King, Zombie, and even Jo Pal-gye.

An assailant attacks Demon King at a torch relay. Zombie prepares to say her goodbyes. Ms. Ma finds out that a black bell has gone missing.

Oh-gong realizes that the Geumganggo has the power to take his life. Kang Dae-sung devises a plan to get rid of his annoyances altogether.

Ah Sa-nyeo pursues what she didn't achieve more than 1,000 years ago. Aware of Demon King's weakness, she decides to use it to her advantage.

Relentless in her desire to be stronger, Sa-nyeo orders General Winter to get her incense burner back. Seon-mi mentions the love bell to Oh-gong.

To avoid exacerbating the dilemma regarding Sa-nyeo, Oh-gong must pretend not to know the truth, and General Winter must be found as soon as possible.

In an uncanny dream, a woman shows Oh-gong the moment that Sam-jang was born. Sa-nyeo demonstrates what she's capable of doing for Dae-sung.

Oh-gong refuses to accept his and Seon-mi's fates. Demon King wants to believe Sa-nyeo despite others' warnings that he's being deceived.

As Oh-gong prepares to sacrifice himself in place of Seon-mi, Demon King, feeling sorry for both, tries to solve the mystery behind the Geumganggo.

While Seon-mi is away at the Lotus Village trying to figure out exactly what her mission is, Oh-gong hurries to begin the ritual to summon the dragon.

Both the Spiritual Realm and Demon King try to get Oh-gong to come out of Sureumdong, where he's shut himself in after the fateful day.