Lin Zhixia was once the youngest psychological profiler in the police force. After her partner was seriously injured due to an "intuition error" three years ago, she resigned and hid in the market, opening a flower shop that no one cared about. Her sister Lin Zhiqiu suddenly disappeared, leaving only a series of strange numbers. She had to find the genius detective Lu Sinian who was "implicated" by her back then - the one who was cold to the bone, but the only one who could understand her. When the two teamed up to investigate the first case, they found that the deceased was holding an old photo of Lin Zhixia, and the second body appeared in the underground garage of her flower shop. The murderer seemed to be playing a hunting game with her as the "prize". When the third case reveals the secret of Lin Zhixia's childhood - she was once a victim of unconscious "psychological manipulation", and the murderer was another "finished product" of the experiment, she must face the truth she fears most: her sister's disappearance, serial cases, and even the "mistakes" three years ago all point to the same abyss. Lin Zhixia chose to use herself as bait. At the moment of the final confrontation with the murderer, she no longer ran away from her unusual talent. She used the last lesson Lu Sinian taught her - "Trust is more important than analysis" to kill the controller on the verge of mental collapse, rescued her sister, and rescued herself who dared not love or be loved.