After their brave actions at Walter Park, the unconventional class of students returns to Babyls Demon School following their summer break. They are not only greeted with praise and admiration, but also with a shocking ultimatum - the entire class must advance to the Dalet rank if they want to remain in the luxurious Royal One classroom for their second year. As the Harvest and Music Festivals loom ahead, the students see these events as prime opportunities to improve their standing. However, no class has ever succeeded in accomplishing this feat. In an effort to help the misfit class defy the odds, the school assigns them special tutors to assist them in overcoming any obstacles that may arise. Determined to surpass the Dalet rank, Iruma Suzuki sets his sights on his ultimate goal. He begins by earning the approval of his temperamental tutor, Bachiko Barbatos.