When the forensic doctor's rationality meets the detective's intuition, an unsolved case spanning fifteen years binds two scarred souls together. Qi Yan uses a scalpel to pursue the truth behind his father's disappearance, Zhou Linfeng swears by his police badge to uncover the secrets of his father's generation, and the scales of the "Butterfly Killer" are quietly falling on their shoulders. In this game of truth and lies, the most dangerous trap is falling in love with someone who may destroy you.
