In the dismal world where humans live together with hybrids everything becomes more distorted day by day. While everyone is used to living with the hybrids, they are still strange creatures, a borderline between humans and other animals. Hybrids introduce humans to even stranger concepts which allows them to use their potential to its fullest. Evas is a teenager who happens to work as an assassin for an agency established by the government to exterminate street gangs. However, after an incident between them and his friend, Evas and his partner Alissa swear to destroy the agency and become free from it. Everything gets even more complicated when Evas becomes the target of another big underground organization.