One day, Mimi, who is living part-time with no luck in her career, is asked to do a special job by her cousin. By investigating evidence of an affair by Seisuke, the handsome president of a famous company...!? Seisuke is sloppy with women and is rumored to be a married woman killer. Mimi ends up using a fake name and pretending to be a married woman to infiltrate the company. Seisuke approaches her, whether she knows his purpose or not...!? Watching the two of them explore each other is sure to keep your heart pounding! An adult love that begins with a lie - begins here!