I'm wondering if this would be copyright infringement.
In 2015, Earth's two new Battle Cruisers (BC-304), the USS Hercules and the HMS Queen Elizabeth begin an expedition into the Andromeda Galaxy. Upon their arrival they find that the galaxy had been seeded with stargates by the ancients, just as the Milky Way and the Peagus galaxies were. The Hercules then dropped a stargate fitted with an iris on X5N-334 a planet on the edge of the Andromeda Galaxy. Using this planet as a base of operations the expedition went out exploring the galaxy.
However, within a few missions the expedition ran into an enemy as formidable as the Goa'uld and the Wraith, the Morlok. Their empire encompasses most of the Andromeda Galaxy, which they patrol in their interstellar motherships and small fighters. The humans now have to fend for themselves undermanned and out gunned in a new galaxy.
If this isn't copyright infringement this is what I was thinking. Have around 80 or so stargates that can attack eachother with X5N-334 being the only one that couldn't be attacked because of its iris is protecting it from an attack via the stargate. To attack X5N-334 you need to have control of a interstellar spaceship (USS Hercules, HMS Queen Elizbeth, or one of the many Morlok motherships). To take a spaceship via a stargate, the planet must have a mothership/BC-304 in orbit and a F-302 (Earth fighter) or a Molock fighter on the planet. Interstellar spaceships can attack other spaceships, X5N-334, and the planet they are in oribit above.
