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Traffic cop Kim Young-goon fires a gun chasing Son Byung-gil and meets Inspector Doh and lawyer Han.

Son Byung-gil claims police bribed him and makes a deal to find the kid with their help.

The Corruption Investigation Team forms. Tae-joo notices Hae-ryong's link to Hyo-jung’s transplant.

The Corruption Investigation Team plans to catch Mr. Kim, but Dong-yoon acts first.

Jae-myung tells Young-goon to investigate Oh Sang-do for a promotion, but he loses his temper.

Oh Sang-do is critical. Park Si-young infiltrates the ICU, while Young-goon searches for his wife.

Bodies are found in the park. Chi-kwang identifies one, and Tae-joo feels closer to the killer.

After losing his father, Young-goon doubts Chi-kwang. Tae-joo links Jae-myung to the killer.

Young-goon finds Song-yi's ring. Tae-joo steals evidence, and presses the DA.

Young-goon finds the ledger Jae-myung hid. He opens it while waiting for Chi-kwang and Tae-joo.

The deputy director reveals his ambition. Young-goon learns Turtle's blood is erased.

Tae-joo quits after catching Turtle. Young-goon restarts the hunt for the killer.

Chi-kwang questions Park Jin-woo about the murder using Ji-hoon's medicine.

Young-goon recalls the killer from 15 years ago and visits Hae-ryong to arrest him.

Young-goon is shocked to find out his father made the Elite Club.