Why did Sang Bae have to die? Dong Sik and Ju Won overcome their sorrow, and they become determined to find out the secret behind Sang Bae's death. The digger they deep, the bigger the secret. Meanwhile, they suspect Gil Gu, who won't tell them the truth.

Jeong Je reveals everything he remembers about how he hit Yu Yeon with his car to Dong Sik. But what he describes contradicts what Dong Sik knows. He lets Jeong Je go to his mother, Councilwoman Do, to pass on a few words of his. Meanwhile, Chief Superintendent Han gets nominated as the next Commissioner General.