Matsuri is a girl who continues to kill others by impulse while her father who is the mayor continues to cover her crimes. Momose is the detective that Matsuri has fallen in love with as well as the son of the man she has killed. Momose does not know this and has already overcome many of the traps she has set for him while he tries to uncover the culprit. In the end, will he be able to reach the truth?