The great Enlighteners of the New Age believed that God‑the Clockmaker had fine‑tuned the universe and then withdrew from its workings. Their followers in the secret organization "Mystery of God" already in our time held that the world is a puzzle, and by solving it one could obtain answers to all questions. For this purpose they long selected, raised, and assembled candidates into the Solvers, training them on various, often lethal tasks, so that the best of the best would finally solve the ultimate mystery of the cosmos. And thus a group of young geniuses led by the reckless Kaito Damon easily proved to the puppeteers that solving puzzles and moving jade tokens, even those the size of a city, does not make anyone smarter or closer to the secrets of existence! But the heroes of mystic‑logical battles, together with a normal girl who joined them, Nonoha, did not enjoy moments of peace for long. New dark figures stepped onto the stage, dissatisfied that Kaito had dropped Orpheus"s bracelet – a toy that burns brains for reasons unknown. According to members of the Order of Orpheus, only by such means can humanity evolve and approach divinity; therefore Damon is a renegade and traitor who must be harshly punished. Yet the villains had entered the Square Root School in vain – now both heroes and their recent adversaries, united, will show the offenders that it is unwise to disrupt the learning process.