‘Monster Cop’ Ma Seok-do investigates an illegal online gambling business led by a former STS Baek and an IT genius CEO Chang. Ma proposes an unexpected alliance to Jang and…

Dong-Chul and Ji-Soo are a happily married couple. One day, Dong-Chul comes home to find his house in disarray and his wife is missing.

Followed by Ma Seok-do, who heads to a foreign country to extradite a suspect. However, he discovers additional murder cases and learns about a killer who had committed crimes against…