Amid their parents’ divorce, three sisters are plunged into uncertainty when their mother is murdered and the family is cast under a cloud of suspicion.

Chul-soo is a man with an intellectual disability. One day, Chul-soo finds out that a young girl, Saet-byul, who is in hospital is his daughter. And soon, Saet-byul sneaks out of the hospital and travels by herself to a faraway city for her friend's birthday. As Chul-soo accompanies Saet-byul's journey, friendship develops between the two.

There are countless incidents happening in one day. The corruption of the upper class discourages the common people who are living their lives diligently. From immorality to financial fraud, and they even commit a highly developed type of expedient. The victims of corruption are us, the common people. However, we have no choice but to be relieved that the victim is not me at least for this time. To turn the table, the best experts in each field have gathered! The former insurance investigator, Tae Joon, has a son who is terminally ill. To save his son, he accepts the deal which is extremely dangerous. And his life completely changes after that day. He organizes a team to get back at those corrupted rich people. With Su Kyung, Na Byeol, Roy, and Eui Sung, Tae Joon approaches to the conspiracy. Self-interest is rampant in our society, but through their journey to exposing the corruption, they begin to understand each other at the end.

Poong Sang is a lonely, pitiful middle-aged man, who has never lived his life for himself. Up until now, he took care of his four younger siblings and supported them financially. Will he ever get to find happiness for himself?

Story about reporters who struggle to get to the bottom of the truth of social corruption.