You play the last surviving member of a species that used to rule the galaxy with terrifying advanced technology and weapons. Eventually your species fell and became wiped out by the other species that were being subjugated. Now there is a power vacuum and these other minor powers are battling to becoming the new empire. Your job as a lone alien with an extremely powerful ship (in a small battle, not powerful against an entire civilization of warships) is to try to balance the scales in an evolving conflict between political/military actors and create a peace that learns from the foolishness of your species ultimate mistake.
Very interesting way to make a 2d tactical space combat game and I love how your job isn’t to conquer the universe like Stellaris, your job is to push and nudge in just the right places to stop full on a galactic war.