Arrogant yuppie cop Lee Gi-hun is summoned to a crime scene at a photo studio where the owner has had his head bashed in. Given the deceased had just taken out a life insurance policy, immediate suspicion falls on his wife, Ji Gyeong-heui. Lee and company, however, initially haul in a petty crook, Kim Hyeok-ju, whose prints were found in the studio and who'd extracted a pile of money from Gyeong-heui. Lee, meanwhile, is busy balancing his personal life with his pregnant cellist wife, Han Su-hyeon, and a sultry jazz vocalist, Choi Ga-heui, who is an old school friend of Su-hyeon's. Pressed by his superiors to solve the case and harassed by Ga-heui, Lee starts to crack.