Yuto is a high school student dominated by uncontrollable impulses, and his mother, Shiho, is exhausted by his behavior. Nami, a college student who was recently dumped by her boyfriend, happens to meet them and becomes intrigued by Yuto's abnormal energy. A self-proclaimed "slut queen," Nami volunteers to calm Yuto down, but she is completely overwhelmed by his momentum, which exceeds all her expectations. After analyzing her defeat, Nami prepares herself physically and mentally to face him again, and their strange, intense battle of wills escalates day by day.