Shen Juan, a top criminal profiler, is trapped in the nightmare of Bai Yueguang's partner who "sacrificed" to protect him five years ago. When the familiar modus operandi reappears, fighting alongside him is Bai Ye, an airborne overseas expert. She was thoughtful and thoughtful, but her habits surprisingly overlapped with the person in his memory. He didn't know that this tacit pursuit of the murderer was a perfect killing plot set up by her, and the only purpose of her return was to profile him as the real murderer and avenge her "death".
