On a moonlit night, an assassin named "Thirteen" has a thin red thread to torture his target to death...
Even though the police were surrounding her, she was extremely agile and always escaped without a trace, leaving the police unable to do anything.
Her goal has no right or wrong, no good or bad, no gain or loss, and no employer. If she takes a fancy to her... Then she will die!
Traffic Xiaosheng and police station Xiaobai thoroughly investigated the case, and in the midst of life and death, they discovered that this case seemed to have something to do with them...