A struggling young man heads to a hotel to run a shady errand -- and stumbles into a job interview with an eminent attorney forced to hire a protégé.

Park Myeong-hwan files a lawsuit against Choi Gang-seok. Go Yeon-u is assigned a pro bono sexual harassment and wrongful termination case.

Yeon-u sets out to make things right on two fronts: the hostage situation he put Cheol-sun in, and the damage he caused to the sexual harassment case.

A divorce case reunites Gang-seok with an old flame. Blackmailed by Chae Geun-sik, Yeon-u must convince a hip-hop artist to become a Kang & Ham client.

A class-action suit's defense lawyer challenges Gang-seok to a duel in court. In Kang & Ham's mock trial, Yeon-u is pitted against a three-time champ.

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Yeon-u suspects Gang-seok is hiding something from his past and investigates, and later helps an accountant accused of forging his academic credentials.

Gang-seok is torn between his loyalty toward his mentor and protecting himself. Yeon-u notices an oddity on Kang & Ham paystubs processed by Namyoung.

Gang-seok defends a man he wrongfully imprisoned as a public prosecutor. Painful memories surface when Yeon-u is assigned to a hit-and-run case.

Gang-seok tries to prove his theory on who actually murdered Kim Min-ju. Yeon-u learns a detail that Park Jun-gyu failed to mention before.

Rumors of Ham Gi-taek's imminent return rattle Kang & Ham's staff. Yeon-u gets his first solo case: a young woman claiming her book idea was stolen.

Gang-seok tries to end a nurses strike at Haram Sanatorium, but when Gi-taek interferes, Yeon-u gets caught in the middle of their power struggle.

A lawsuit against a car manufacturer over a fatal accident reunites Gang-seok with David Kim. Yeon-u introduces Kim Ji-na to his grandmother.

When David Kim offers to settle out of court if Gang-seok is disbarred, Yeon-u gives Ha-yeon an idea to measure Gang-seok's chances of winning in court.

Kang & Ham's partners vote on whether to allow the case against Gang-seok to go to trial. But first, Yeon-u presents testimony he gathered from CEO Seo.

When the truth comes out, Yeon-u takes responsibility for his actions. But he has one more card left to play in a bid to protect Gang-seok and the firm.