A new threat arrives in the year 2201, one year after the Yamato protected Earth from nuclear pollution. The Yamato embarks on its final mission to defend the Earth from this new menace. Earth has nearly recovered from the fight with Gamilus, and restoration has spread to the other worlds. Former Yamato crew members steal their old space fortress and launch a new fight after discovering a weird, garbled message that appears to be coming from a white comet heading towards Earth.