The Last of the Deep Space Stations

A rusty/Terran/alien/ancient/unreliable/cutting-edge (delete as appropriate) space station in deep space/orbiting a dead world/guarding an alien planet (delete as appropriate). You’re a team of Earthers/natives/aliens/robots (delete as appropriate) charged with handing it over/taking it over/scuttling it/repairing it (delete as appropriate). But as ancient forces/political factions/hostile aliens (delete as appropriate) unexpectedly come …