Alice Otsu, a student at the prestigious private school Mountain Sky Academy, comes from a wealthy family. Protagonist Kobayashi has a criminal record and was laid off from his job before finding work as a janitor at the school. However, he becomes a prime target for elite students like Alice, especially after she humiliates him publicly. Oh, how he wishes to get revenge! He would do anything to make her pay... Little does he know that an app designed for blackmail found its way into his hands by chance...