As in the case of the most part of the work of Tedzuki, the main plot of NextWorld is dedicated to the ground in the nuclear era. Radiation and nuclear tests led to the creation of many strange, almost supernatural animal species, and it seems that all important peoples of the planet want to reveal the secrets of these creatures and how best to use atomic energy for their own purposes. Tensions increase as political conflict grow, and it seems that the Third World War is inevitable. A strange mixture of scientists, politicians and young adventurers can become the last and best hope on Earth against corrupt government officials, armed forces, robots and secret societies. Meanwhile, the Kenichi Boy, Young Rock Holmes, Shunsaka Ban (Mustachio) and others detect Fumun, Raze of tiny telekinic humanoids, which developed in Australia.