The lives of Do Chi Gwang, Kim Young Koon, and Han Tae Joo were destroyed by a tragic affair. They became members of an internal affairs investigation team for the police and they try to dig up the truth on who is behind the tragic affair.

Jae-i's search for her brother takes her on a journey of self-discovery and love. Along the way, she must confront the dark secrets of her family and the dangers of the Joseon era.

The story of an elegant Cheongdam-dong woman named Woo Ah Jin, who relished a life of luxury by marrying a quasi-chaebol son, until Park Bok Ja walks into her life.

The story revolves around a special prosecution unit that only deals with sex crimes. The team not only solves difficult cases at present but also brings an unsolved case in the past to light.

A farmer with multiple jobs and an insomniac TV host's lives intertwine in amusing ways as their opposite schedules repeatedly bring them together.