At Satan Academy, Moresu Mask continues his daily battles against the disciplinary teachers. Suddenly, an alien invader appears before him—extraterrestrial beings drawn to Earth by human beauty and female arousal fluids. Possessing overwhelming power, they quickly subjugate the school principal and the disciplinary staff one by one. Moresu Mask is defeated by the alien and dragged into their vortex of desire. The academy descends further into ruin as female students are consecutively offered up to the alien. Amidst this chaos, one brave girl resolves to stand against the evil—but her choice leads only to tragedy.