As a child, Nam Ji-a loses her parents. Two decades later, a curious case involving a runaway bride and a man with a red umbrella catches her attention.

As he recovers, Yeon opens up to Ji-a about his first love. Rang and Ki Yu-ri are unable to ignore a creature that is crying out for help.

Recognizing Lee Yeon as her childhood savior, Ji-a thinks he might have a lead in locating her parents. A skull is discovered on a fishing boat.

The eyeglasses give Ji-a a peek into her tragic history with Yeon. A woman in green traps Rang and Ji-a inside their own minds.

In a confrontation with Yeon, Imugi demonstrates the terrible power he possesses. A visit to death's door yields long-sought answers for Ji-a.

A mysterious plague sweeps across Seoul. Knowing that Ji-a's life is in greater danger than ever, Yeon proposes a risky alliance.

While Yeon prepares to carry out his plan to put an end to Imugi's terror, Ji-a resolves to protect Yeon. Taluipa arrives at a difficult decision.

A pattern emerges as Ji-a looks into the island's history of strange and suspicious deaths. Lee Rang keeps Yeon distracted.

While seeking information about Ji-a's parents, Yeon is reunited with an old acquaintance. Rang tries to get his hands on a valuable artifact.

Worried that Ji-a might not be safe without her fox marble, Yeon insists on keeping a close eye on her. Rang loses his special eyeglasses.

Inside the forest of demons, Rang and Yeon fight to survive. Elsewhere, Ji-a begins to forget reality as she gives into a fantasy.

Rang seeks a way to release himself from the binding debt he owes Kwon Hae-ryong. At work, Ji-a's team welcomes a new intern.

Imugi interrupts Ji-a's newfound happiness with an unsettling appearance in her dreams. Yu-ri temporarily loses control over her actions.

With new revelations weighing heavily in their hearts, Ji-a and Yeon go on a getaway. Yeon identifies a weapon that could be the key to defeating Imugi.

Unable to move on, Ji-a begins a special project. Meanwhile, Rang refuses to give up on finding a way to bring Yeon back.

Rang pledges to hurt Yeon for his past actions. Before leaving for hell to serve his punishment, Yeon enjoys a home-cooked meal with Ji-a.