The popular game series Discipline has been revived with an original story that takes place before Hayami Takuro became the protagonist in the first series. In this new installment, Morimoto Leona and Otokawa Saori are two new boarding students at St. Alcadia Academy. While Leona is determined to dominate everyone around her and punish those who do not serve her purpose, even teachers are not immune to her wrath. Meanwhile, fellow students Yuuki, Ruri, and Maiko unknowingly become targets of the male students' relentless sexual advances.