Ruru Hayama is a newly hired teacher at a prestigious academy. Her fair skin and voluptuous body constantly captivate the male students' gazes. However, one day, an incident involving a group report submitted by Ruru exposes the hidden depravity beneath the facade of the vice principal and her fellow teachers, revealing their greasy, perverted lust. Subjected to brutal training, she is sequentially ravaged by the deviant teachers lurking within the school, forced to suppress the burning sexual desires of the students. In truth, this is part of a scheme orchestrated by the corrupt academy owners, who targeted Ruru to condition her as a submissive sex slave for their own indulgence.