수사팀에 연락했던 산조은행 제보자가 사라졌다! 오히려 대출비리 주범으로 지목되는 제보자. 수사가 난항에 빠진 가운데, 동주는 조세 5국 팀원들과 함께 사라진 제보자의 행방을 찾기 시작하고... 수사를 해갈 수록 산조은행의 또 다른 비리를 파헤치게 된다.
Dong-joo and Hye-young are trying to track down the informant, the only person who can confirm whether Han Kyung-mo is the mastermind behind the Gold Cash case, and they find something surprising. They think the real culprit is framing Han and someone is trying to manipulate the situation. Meanwhile, Young is looking into Myeongju Electronics case that happened 17 years ago and thinks there is a link between the two cases, and it has something to do with Sancho Bank's loans.
