Nonomiya Kyoko reunites with her relative Gamo Michiru after many years of separation. In the past, the two shared a deadly secret while still at school. For the past 17 years, Kyoko has been avoiding Michiru, but now it seems they are destined to meet.

Michiru takes over the company Kyoko works for, and she opens a counseling service for people who are having problems in life. Honor, wealth, ambition, unrequited love, etc. She ruthlessly manipulates the desires of those who come here and makes them fall into despair.

Kyoko, who is stuck in the position of Accomplice with Michiru, gradually worships that Evil Girl...What will be the fate of these two people linked by crime?