Misuzu, a teacher at Seishoku Private Academy, is beloved by her students for her elegant charm and passionate dedication to education. Appointed as the executive committee chair for this year's school festival, "Shasei Festival," she throws herself into preparations with full energy. However, her attention is drawn to Class H—students labeled as the lowest achievers, mocked by peers as "H the trash bin" and "H the pervert," and generally ostracized. Misuzu hopes to reach their hearts and bring about change by involving them in the festival. But the students exploit her kindness, subjecting her to lewd and explicit schemes. The story unfolds a shocking relationship between teacher and students, filled with humiliation and betrayal.