At the current land, in the busy city of Khotar, the lazy and undeclared 17-year-old high school student from Gunma High Izumi Kaiva lives. Because of its extreme laziness, he often faces problems when performing even the most simple tasks in everyday life, relying on the fact that his younger sister will take care of him, although in fact he never admits it. Meanwhile, on the planet, the Trilliaus of the Defense Forces of the Planet was reduced to no more than group of militia. From the militants, the 19-year-old River Eykiro is one of the three remaining to devote his life to the cessation of death and destruction, which devastated the planet from the moment of arriving the bulk, which is desperately looking for something, but what? Apocalyptic premonitions of kaivo and strange nightmares foresee that a draw will soon become the same ...