As the nation is rocked by a scandal involving 'national actor' Kang Eun-seok, who is accused of having an inappropriate sexual relationship with a high school girl, Yoo-jeong, Hyun-jin, a lawyer at L&J, struggles to prove Eun-seok's guilt. By chance, Hyun-jin overhears a conversation about the Eun-seok – Yoo-jeong case at the home of her former lover, Jun-hyeok, and is taken aback to realize that the case is far bigger than she had imagined.

Jun-hyeok is found dead, and Yoo-jeong claims that she killed him. Hyun-jin finds it hard to believe, so she tries to find out the truth behind Ra-young and Shin-jae. Hyun-jin meets Seon-hwa, hoping she'd share some information about Jun-hyeok. Meanwhile, Ra-young comes home, only to be attacked by a mysterious man.

Seon-gyu takes DNA samples from Ra-young and Hyun-jin to compare them with the DNA found on an earring discovered at Jun-hyeok's house. Ra-young pulls some strings so that the police don't get their hands on Hyun-jin's DNA. On the day of the crime scene reenactment, Yoo-jeong recants her statement.