The delinquent prosecutor destroys everything corrupted with wealth and power. His face-off with evil begins.

Woo Jin and Samuel, a sexless married couple, are utterly fed up with their lives. To improve their circumstances, they choose to earn money by blackmailing unfaithful couples. As they track down these couples, they find financial stability and rediscover their own connection. They start working on their own issues, but the more they delve into it, the hidden truth resurfaces, complicating their journey. What is the truth that they have been avoiding?

Cha Wooseok (Wi Hajun) receives a mysterious call from an informant who claims to have evidence of a fraud-related murder. Before revealing the truth, the informant falls to her death. Wooseok’s investigation leads him to Royal Auction and its chief auctioneer, Han Seol-ah (Park Minyoung), whose three fiancés have all died under suspicious circumstances. To expose the truth, or perhaps to test her, Wooseok proposes they fake a relationship. As he uncovers her secrets, he realizes he may have stepped into a web he can’t escape—and that getting out could cost him everything.

A debt-ridden building owner agrees to stage a fake kidnapping to save his family and property, only for the plan to spiral into a real abduction and a dangerously escalating situation.

Navigating both the criminal underworld and law enforcement agencies, professional snitches called "yadang" provide covert information about the drug world to prosecutors and police. When a drug bust at a party attended by high-profile second-generation VIPs entangles those involved into a dangerous conspiracy, a seasoned yadang must do everything in his power not just to make it out on top, but alive.