Ruze is an SSS rank psycho killer known for her ruthless methods and terrifying combat skills. After being captured by the blackwatch the Blackwatch Special Operative Agency, she's given a choice: remain a prisoner or work for the agency. She become the partner of Max. The cold highly disciplined SSS rank special police officer who captured her. Ruze inability to cry buried inside her made her another person of herself. Force to work together they both are tangled together in this mess.