A real all-boys high school in Tokyo, its infirmary is a hidden secret spot rumored to bring strange occurrences. Among students, there's an unspoken rule that stepping into the infirmary brings good fortune. One afternoon, under this eerie atmosphere, perverted students run wild inside the infirmary, turning it into a stage for their desires. Female teachers are lured in and subjected to aggressive, sexually dominant acts bordering on harassment. This urban legend continues to circulate within the school, feeding the unsettling mood and mysterious tales passed among students.