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.

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.

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.

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.

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