In 2062, the Earth was divided into two camps for the ownership of the orbital elevator. The Free Space Army, to which the protagonist Katsuragi belongs, planned to destroy the energy supply of the orbital elevator with the newly developed D weapon "Space-Time Shock Bomb", but the action encountered fierce artillery fire from the hostile camp and had to retreat. Katsuragi, who was furious in the crisis, activated the Space-Time Shock Bomb that had not yet been adjusted, which resulted in unexpected space-time chaos, causing the multiple worlds to mix with each other at the same time and forming a "mutual restraint realm". Katsuragi was also caught in the shock wave and moved in time and space, and came to the chaotic space-time century 20 years after the incident. Katsuragi was found by the Emman caravan and acted together, but Katsuragi became the target of competition among various forces because he was the key "singularity" to repair the chaotic space-time. While fighting and seeking solutions, Katsuragi's classmate Osen from the military academy appeared in front of him and fought with him; he even saw his future daughter Athena. Katsuragi will eventually face a world where the old and the new are mixed together, and try to repair the chaos of time and space. Katsuragi finally discovered that the last resort to get time and space back on track was to go back to the time and space before the time and space shock bomb was activated, and kill himself at that time...