Mai is a woman obsessed with fulfilling her abnormal desire to penetrate every single hole. Driven by passion, she tirelessly creates devices, eventually building an electric piston-powered, thick vibrator machine for self-penetration. As she drowns in pleasure from mechanical stimulation deep in her throat, vagina, and rectum, strong men appear before her. They proceed to invade her three holes one after another, just like machines. Witness the shocking climax of this intense encounter.