Go Woo-rim

A hitman accidentally kills a little girl. Filled with regret, he wants to quit. But then to tie up loose ends, he is forced to go on another job, to kill the girl's mother.

Hong Gil-dong is an infallible private detective with an exceptional memory and quirky personality. While chasing the only target he failed to find, he gets entangled in a much bigger conspiracy than he bargained for.

Joon-seok is sent to prison for his involvement in Dong-soo's death. He meets Dong-soo's son in prison, keeps his identity a secret, and agrees to join forces when he is released. All of their plans fall apart when Sung-hoon finds out the truth.

About a man and a woman who miss each other but cannot meet. Young-ho, a young man who took several tries to get into college, doesn't have any special goals in life, and starts exchanging letters with someone.

After being wrongly imprisoned for murdering her husband, a woman returns to the house where the incident occurred to solve the mystery of his death.