The Kihara family that crushes and destroys everything and GREMLIN that smashes and annihilates everything. The clash between the two begins. "Starting November 13th, we, the 27 companies of the anti-Academy City Science Guardians will be holding a tournament, Natural Selector, in Eastern Europe's Baggage City." That would destroy the core of Academy City's identity. This strategy moves ahead with the help of GREMLIN, the organization that is a fusion of magic and science. And Academy City refuses to allow it to succeed. A mere three Kiharas and a mere three members of GREMLIN are involved.