Kasumi is living an ordinary life with her husband, Mitsuo. One night, a drunken Mitsuo comes home with his boss, Tajima. Tajima, who has been eyeing Kasumi for a long time, takes advantage of Mitsuo's sleep and pushes Kasumi down to rape her. Not satisfied with just one visit, Tajima visits the Okazaki household again and again, playing with Kasumi as if she were a toy. At first, Kasumi was violently resisting both physically and mentally, but gradually Tajima began to train her.
