In 2024, the computer network prevails throughout daily life. Sora Yuuki is a 14-year-old girl. One day, she is invited to an online game "The World". After an accident in the game, the real world begins to deform.

When one space colony declared its independence from the Earth Federation, the devastating 7th Space War, an all-out war between Earth and space, resulted. The Federation responded to the Space Revolutionary Army with mobile suits, called Gundams. However, the Space Revolutionary forces played their trump card and dropped hundreds of space colonies onto the Earth, plunging the planet into a seven-year-long nuclear winter. The Federation collapsed, but the Space Revolutionary Army was unable to invade the Earth in the aftermath of the colony drop. Fifteen years have passed. The year is now After War 0015, and a New Federation has sprung up on Earth to restore order. In space, the colonial leaders have been rebuilding their own forces as well. By chance, fifteen-year-old Garrod Ran has discovered an old Federation mobile suit, the Gundam X, and now he uses it to help out the Vulture ship Freeden in its struggle to keep the powers that be from repeating the mistakes of the past.

After wandering through the desert for days, a bitter warrior named Munsu is lost and unable to continue. His life is unexpectedly saved by Mon-ryon, a young man who dreams of becoming a secret agent for Jushin, a once-great country that was recently destroyed. Mon-ryon's goal is to save his girlfriend, Chunhyan, a born fighter who is held captive by the evil Lord Byonand. Then, from out of nowhere, blood begins trickling from his chest. He has been fatally wounded by the Sarinjas, a cannibalistic breed of desert goblin. The quick-thinking Munsu convinces these beasts to spare his life, in exchange for the peaceful handover of Mon-ryon's appetizing corpse. Although skeptical of Mon-ryon's motives, Munsu sets out to continue the mission that the young idealist described. Accompanied by an army of ghost troops, unleashed using the powers of Angyo Onshi, Munsu liberates Chunhyan. After visiting her boyfriend's final resting place, she declares herself Munsu's bodyguard and, together, they set out on a mission to punish those who stripped Jushin of its original glory.

Kaoru and the girls have a picnic in Spring and talk about their dreams for the future.