Arriving at juvenile court, Sim Eun-seok meets the compassionate Cha Tae-ju. The details of a murder case involving an underage killer don't add up.

Students from privileged backgrounds are caught in a scandal that attracts national attention. Kang Won-jung hides a career-sabotaging secret.

The search for the truth behind a teenager's injuries leads to painful and hidden revelations. Meanwhile, the case is personal for Tae-ju.

A troubling call puts a youth counseling instructor under the judges' microscope. The girls inside her recovery home back up the claims.

Eun-seok and Tae-ju set out to locate the missing girls before harm comes to them. The whistleblower's surprising identity is revealed.

Eun-seok fixates on one of the accused perpetrators in a brutal sexual assault case. Tae-ju gains insight into her personal history.

Eun-seok's unorthodox methods in dealing with the suspected accomplice ruffle feathers. Contradictory accusations fly in a heated trial.

Eun-seok expects Won-jung to do the right thing, and pushes back against his actions in court. When he demands hard evidence, she digs in deeper.

Investigating an underage traffic accident case despite Eun-seok's reservations, Tae-ju discovers a key missing piece. They clash with Na Geun-hee.

Efforts to locate the ringleader of the runaway gang places Eun-seok in grave danger. Geun-hee faces a confrontation about her principles.