Denizens of Lux have come to call it "The City" and treat it as a sentient force. Three factions vie for control of the city: the Organo, a strictly professional conglomerate with ties to the criminal underworld in the prosthetics business; the Union, a fanatical populist group interfering with Organo's affairs; and Racan, a marauding group of Texhnolyzed youths.

Out of the blue, monsters usually living beneath the Earth’s surface began to attack the terrestrial world. They were called the Underground Hades Empire Infershia. The Ozu Siblings of Makito, Houka, Urara, Tsubasa, and Kai hear from their mother, Miyuki, that they are the Magicians of Justice to stand against the Infershia. The siblings are perplexed by such an unexpected event. However, without hesitation, Miyuki charges at the Infershia, and the Ozu Siblings are forced to come together to fight as one.