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Uncertain of her sense of duty as a patrol officer, Jeong-o makes her big decision, but she can't help feeling guilty, especially toward Sang-su.

The Hongil Patrol Division is hit hard by the recent incident. The officers continue to deal with the unjust realities of being honest cops.

Jang-mi faces severe disciplinary action for a mistake her superiors made. Min-seok is accused of using unnecessary force to restrain a citizen.

Jeong-o risks facing Internal Affairs again by arguing for sex education in the schools and offending the parents of high school students.

Despite the risks, Sang-su chases the suspect into the woods. With his daughter getting married soon, Han-sol keeps his diagnosis a secret for now.

Another crisis strikes the victim of the recent sexual assault incident. Yang-chon joins Jang-mi's team to focus on catching the serial sex offender.

The officers are determined to seek justice for Sam-bo. Jang-mi is certain a serial rapist is at large, but lacks evidence to request a task force.

As Han-sol predicted, Yang-chon flips out when he learns what Ju-yeong has been doing. He's all the more stunned when he hears what his father did.

More desperately than before, Sang-su makes his feelings known to Jeong-o. Jang-mi and Gyeong-mo team up to investigate Ju-yeong's shady dealings.

Jang-mi, Jeong-o and Nam-il join forces to round up those involved in prostitution. Rivalries heat up at Hongil Patrol Division's team-building outing.

Jeong-o's attempt to capture a suspect in a prostitution case goes awry. Discontent against Yang-chon grows after Sang-su gets injured on duty.

Apprehension grips Hongil Patrol Division after Jeong-o's incident. Along with her mentor Kang Nam-il, Jeong-o faces investigation by Internal Affairs.

From difficult cases to workplace tensions to personal family issues, each day is riddled with problems for the officers at Hongil Patrol Division.

Yang-chon doesn't seem to want to get along with anyone, especially Sang-su. Jeong-o responds to a report of possible domestic violence.

The probationary officers' first violent crime scene takes them by surprise. Yang-chon finds a piece of evidence that will clear his name.

Officer Oh Yang-chon disregards a call from his wife about a family emergency in order to help a senior colleague chase down a suspect.

Getting a regular, full-time job isn't easy for young Koreans who have no connections or money, like Sang-su - or for women, like Jeong-o.