You open your eyes, shaken awake by your female classmate, Dannoura. You look around, you're in the school bus you were in for the field trip, and fell asleep right before the bus departed. At the front of the bus, there's a girl with white hair and a dress resembling a magical girl cosplay. Everyone in the bus is silent, and obediently waiting for her to talk, for some reason. "Hello, Sage Candidates. You are in the middle of another world, and I've summoned you here to defeat the Demon King."