The demon king is terrorising the completely innocent human world, and they need the help of summoned heroes to deal with the threat-that is what the king, Jeffrey Otto Von Burgenheid, claims. But the demon king won't just sit still, and intercepts the summoning to take the person who's most aligned with the values of the average demon. A completely average class of students, taken away from their family and the only world they've ever known, unable to ever return. But the fate of one is looking to be a lot stranger than the rest.