It is Universal Century 0079. Due to overpopulation, mankind has moved into space, housed in large orbiting cylinders called colonies. One group of colonies breaks away from Earth rule and declares itself to be an independent nation, the Principality of Zeon. This sudden breakaway of the colony starts the One Year War. When the Zeon forces attack the colony of teenager Amuro Ray, he suddenly finds himself in the driver's seat of the Federation's newest weapon, the white mobile suit called the Gundam. And, without any training at all, he gets it to stand!