Following the declaration of independence by a space colony from the Earth Federation, the 7th Space War erupted, leading to a fierce conflict between Earth and space. To combat the Space Revolutionary Army, the Federation introduced powerful mobile suits known as Gundams. In a drastic move, the Space Revolutionary forces dropped numerous space colonies onto Earth, triggering a prolonged nuclear winter that shattered the Federation. Despite their victory, the Space Revolutionary Army faced obstacles invading Earth after the calamitous colony drop. Now, in the era of After War 0015, a New Federation has emerged on Earth to restore stability, while the colonial leaders in space are rebuilding their strength. In this turbulent time, a chance encounter leads fifteen-year-old Garrod Ran to unearth the Gundam X, an ancient Federation mobile suit. He joins forces with the Vulture ship Freeden to prevent history from repeating its catastrophic spiral, standing against the looming threats of the past.