Super Dimension Cavalry Southern Cross

is an anime TV series released in 1984, as the third of the Super Dimension series. It was adapted as the "Second Generation" of the American TV series Robotech.

Plot
In the far future, in the year 2120, humanity has left the Solar System and started the colonization of other planets. One of the farthest colonies is located in the terraformed planet Glorie. The powerful army of the Southern Cross protects the colonists from any unknown dangers. However, unbeknownst to the humans, Glorie is also the ancestral home of the Zor, a highly advanced race of nomadic humanoid aliens who have returned to reclaim their world.