Recently, Jun has been spending a lot of time at his girlfriend Izumi's house. It saves money on food and hotel fees. But more than anything, it allows him to meet Izumi's mother, Haruka. Every time he visits her house, he senses Haruka's adult sexiness. Before he knew it, Jun was captivated by her bewitching charm that Izumi doesn't have. But his days change dramatically when Jun happens to witness Haruka masturbating. The relationship between Jun, Izumi, and his mother, Haruka, develops into a strange love triangle where affection and sexual urges as mother and daughter collide...