Abyss

After getting alarming news from his fiancée, Cha Min has a mishap and receives an object called Abyss. Go Se-yeon meets someone who says he’s a friend.

Min explains what he did to Se-yeon, who’s in disbelief over her circumstances. Vowing to find her killer, she devises a way to help Min and herself.

Se-yeon and Min are stunned by what Park Gi-man has been doing, and they unwittingly get help from a police detective -- who thinks she’s someone else.

Convinced that he’s seen his ex-fiancée, Min is frantic to talk to her, but Se-yeon tries to remind him that he’s not the same person anymore.

After making a horrific discovery, Se-yeon considers using Abyss, and tries to persuade Park Dong-cheol to keep investigating the prosecutor’s murder.

Park Dong-cheol tries to hunt down Oh Yeong-cheol, who keeps eluding the police. Min’s mother doesn’t know what to make of the changes in her son.

Se-yeon finds herself seeing Min in a different light after realizing he’s always been by her side. Jang Hui-jin reveals something shocking to Min.

Park Dong-cheol demands to know why Se-yeon keeps interfering with the case, and someone claiming to be Lee Mi-do suddenly appears out of nowhere.

Se-yeon tries to explain her actions to Min and has an emotional reunion with her mother. Hui-jin refuses to back down when confronted by Min’s mother.

Se-yeon senses that she may be in danger. Min shares a secret about his father. Hui-jin’s mother gets agitated after seeing someone on TV.