Two detectives with nothing in common find themselves chasing the same impossible cases. Qian Cuo runs on instinct and rage, barking orders that somehow work. Teng Ruiyu operates in absolute silence, calculating every angle with surgical precision. When a series of alchemical murders begins surfacing across the city, their contrasting methods become essential to survival. The cases make no sense. Bodies appear with impossible conditions, crimes that seem to violate the laws of nature itself. As they dig deeper, the pair discovers these aren't random killings but part of something far larger, connected to events from two years prior that nearly destroyed them both. Their partnership becomes a battle between hot and cold, emotion and logic. Neither can solve what's happening alone, yet working together means constantly fighting each other. The mystery deepens with each corpse, pulling them toward a truth that neither may want to face. What happened two years ago wasn't just a case. It was a beginning.