After a summer break, the misfit class of Babyls Demon School returns to face a daunting task - to reach Dalet rank in order to stay in their prized classroom. With the Harvest and Music Festivals approaching, opportunities arise for advancement, yet the challenge remains unprecedented. To support their journey, the school assigns special tutors, including the fiery Bachiko Barbatos, to guide them. Determined to surpass Dalet, Iruma Suzuki aims to impress his tutor and lead his class towards the impossible goal of promotion.