Ji Hyeong-min has been put in charge of a special unit to take down the drug lords of the city. Jung Shi-hyun is tired of the way his boss is treating him and decides to take him down.
Doctor's Son tries to enact revenge on Chairman Jo, but Team Leader Ji arrests him before Doctor's Son can kill him. Chairman Jo is released on sick bail, much to Team Leader Ji's disappointment.
Yoon Soo Min decides to get revenge for her sister's death by killing Doctor's Son. Knowing that Doctor's Son didn't kill her sister, Team Leader Ji tries to stop her.
In this thrilling episode, Doctor's Son discovers that Min has been lying to him his entire life. Undercover agents, police officers and drug dealers are involved in a shootout that quickly escalates.
In this series finale, Min reveals that Doctor's Son is actually an undercover agent to his criminal friends. After Team Leader Ji finds out about Doctor's Son's secret, they work together to catch Min.
