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, Se-yeon devises a way to help Min and herself.
Go Se-yeon and Cha Min set up as lawyers to being closer to the police investigations they are interested in. Park Ki-Man and Oh Young-Cheol have a clash again. Finally, a hidden propinquity is revealed.
Cha Min's fiancée appears and prosecutes on the case of Go Se-yeon's murdering which gets a big publicity. The marble keeps its own rules and changes its owner.
Oh Young-Cheol doesn't stop killing, however he can still keep off the police. Go Se-yeon is compelled to go on investigating without Cha Min. Oh Young-Cheol finds out how Abyss works.
Se-yeon gets into some troubles because of real Mi-Do's appearance. Hee-Jin does anything for rescuing her mother. Oh Young-Cheol's plans go on despite he stays in prison. Cha Min's love experiences are revealed.
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 something unnerving about Seo Ji-uk. Hui-jin gets an unexpected visitor and has an idea about what Oh Yeong-cheol may be planning to do.
