Mari was engaging in compensated dating to earn some pocket money. Ishibashi, who was laid off and heartbroken, accepts Mari's invitation, but one day he becomes indignant and restrains and imprisons Mari. In desperation, Ishibashi uses Mari as a sex toy. Eventually, he gets his acquaintances to sleep with Mari, and then he gathers his friends and begins a gangbang creampie that continues to rape Mari until he gets bored and runs out of semen. No one comes to help him...