Lin Mo, codenamed "Night Owl", was once the ace of the Shadow Force. His hands were stained with blood, but he chose to retire because he was tired of killing. He hid in the bustling city and just wanted to be an ordinary security guard with a heavy past. However, the peaceful life was broken by a well-planned "accident". On a rainy night, he rescued a seemingly weak girl Su Wan, but instead she held a blood-stained butterfly knife to her throat. The girl's eyes were smiling, her voice was as sweet as honey, but what she said was the most chilling love words: "Senior's scars are so beautiful, can I peel them off and keep them?" Su Wan, on the surface, is a genius college student, but in fact, she is a pathological hunter with the power of "absolute analysis". She is obsessed with destroying the indestructible will of the strong, and Lin Mo, this walking "art of war", has become her perfect prey.
This deadly cat-and-mouse game has been shrouded in lies and misunderstandings from the beginning. Su Wan approached Lin Mo, claiming that she was hired by a mysterious organization to test his "worth". In fact, she had already been secretly controlled by a supernatural research organization called "Abyss Gaze". Through its agent, Lin Mo's former enemy Zhao Tianhao, a second-generation rich man who now controls the underground world, the organization constantly sets up traps with the intention of forcing Lin Mo to show his fighting instinct again.
