Due to the mystery in his heart, Sylvain defected from his home, but unfortunately died. With the help of the mysterious goddess, Sylvain was reborn and accepted the mission. He accidentally met a strange man with blue hair. In order to survive, the two began to fight and fight while helping others solve crimes in exchange for money. Miraculously, Sylvain could get useful clues in his dreams for some reason. As the number of solved cases increased, Sylvain was getting closer and closer to the answer in his heart. . .