Rheuma - The two universes

In a final testimony, Captain Gunterroid, a pilot of Martian Astronautics, launches a plexiglass capsule into deep space containing a recording of his last thoughts. When the alien starship Omnitron retrieves and translates it, a chilling truth emerges: humanity has already fought the opening battle of a cosmic war, and every intelligent civilization in the Milky Way will soon face the greatest threat to its existence.