Based on the true story of a string of serial killings that rocked a rural community in the 1980s, a local officer reluctantly joins forces with a seasoned Seoul detective to investigate the crimes, leading each man on a wrenching, yearslong odyssey of failure and frustration that will drive him to the existential edge.

During a blackout, a woman is found murdered in the middle of the Oresund Bridge, on the border between Sweden and Denmark. Police from both countries are called to the scene, and what looks like one murder turns out to be two. It's a spectacular double murder: the bodies have been brutally cut in half at the waist and put together to form a single corpse. Half of the body belongs to a Swedish politician, the other half to a Danish prostitute. Trapped...