Yuria, a young and righteous female teacher, lives each day passionately devoted to her students. One day, while walking home from work, she rescues a male student being bullied and discovers her senior colleague is behind the abuse. Driven by her strong sense of justice, she confronts the teacher, but he exploits her integrity, uncovering her vulnerabilities. As a result, her massive breasts are violated and she is raped in front of the very student she tried to save. The senior teacher then summons more students, and Yuria is gang-raped, her huge breasts and body relentlessly used until she loses all rationality.