While fighting the Nanashi, the Shinkengers are astonished to find high school students interfering with the battle. Afterwards, Takeru notices that all the students attend the private Takashiro Academy, so he sends Ryunosuke and Kotoha, posing as a teacher and student respectively, and DaiGoyou to the school to investigate possible Gedoushu activity. The next day, Ryunosuke, drawing from previous experience, suspects that a couple of teachers are Gedoushu in disguise, but is proven wrong when he finds them in a trance just like the students from before. Ryunosuke soon suspects that Kotoha's new friend, Eri Takahashi, is the Gedoushu until she, too, becomes entranced. As Kotoha feels guilty about not being able to keep Eri safe, she suddenly notices that Eri has a thin white band around her wrist that was not previously there. Kotoha and Ryunosuke soon discover that all the affected students and teachers have the white bands on their wrists. DaiGoyou's light shows that all the bands are connected to a network of strings. When Ryunosuke tries to cut the strings, the Ayakashi Kugutsukai reveals himself. Shinken Blue and Shinken Yellow engage him as their teammates arrive to assist. Kugutsukai, however, summons the entranced students and teachers to serve in holding the Shinkengers off. Shinken Yellow uses her Modikara to help Super Shinken Blue take out Kugutsukai and free everyone from the trance. Shinken DaiGoyou and Ika-Daikaioh double team Kugutsukai before DaiGoyou destroys him. With the school saved, Ryunosuke and Kotoha say goodbye to everyone in Takashiro Academy.