The space armada from Mars, known as the Imperial Atomic Space Navy (Battle Group Seven), fights an interstellar war against their long-time enemy, the Arcturans. The armada is forced into battle by Enforcer Droids, tasked to keep the Martian soldiers in line, despite objections by some that it won't work. Meanwhile, an incompetent crew of a small Martian spaceship, from the Civilian Asteroid Patrol, intercept a distress signal from the fleet, followed by a Halloween rebroadcast of Orson Welles' 1938 The War of the Worlds (radio) radio dramatization.