Super Dimension Cavalry Southern Cross - S01

By the year 2120, humans have managed to colonize other planets after Earth was nearly destroyed in the last great world war. But on Gloire, one such colony is caught off guard when The Zor arrive, a group of beings who were the planet's original inhabitants and had left after similar near-fatal events. They come to reclaim their former home world, and a relentless war breaks out between the two races that eventually leads to a cataclysmic showdown and a no-win scenario for either side.