Leverage.

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.