While pursuing a lead on the mysterious disappearances, Green Squadron managed to infiltrate the “Academy of Dreams.” Though Usukubo and Hisui have both fallen under the boss monster Magatia's spell, due to his ignorance of school life, D held onto his sanity…but got himself expelled! Not so easily thwarted, he snuck back in, determined to shatter the illusionary world. Will he manage to defeat Magatia and force those who have retreated into a fake utopia to face reality?