Forensic pathologist Kang is assigned to examine the dismembered corpse of a female murder victim. Detective Min points to a fanatic environmentalist, Lee Sung-ho, as the primary suspect. But when Kang’s daughter is kidnapped, a manipulative game begins between Kang and Lee, who holds secrets about the homicide case.

10 years after "Marrying the Mafia 1". The three J's established an architecture company and have become well-known business. They hold pens instead of fists in their hands but things still happen around them and now even bother their children.