In the year 1987, NASA launched space probe Ranger III, with astronaut William "Buck" Rogers, on a 5-month trip around the solar system. However, the craft runs into a meteor storm, which disrupts its life support system and sends it into a long elliptical orbit of the Earth. In the year 2491, Ranger III again approaches the Earth, and is intercepted by the alien flagship Draconia, which is on a peace mission to Earth. Aboard the Draconia, Buck is revived by Princess Ardala and her second-in- command, Kane, whose true plan is to attack and conquer Earth. Buck is sent to Earth with a hidden homing device, which is soon discovered by Earth's Defense Directorate. After Buck convinces the humans of his true identity -- a man from the past -- he helps them to repel the Draconians' attack, with the aid of the mechanoids Dr. Theopolis and Twiki.

In the year 1987, NASA launched space probe Ranger III, with astronaut William ""Buck" Rogers, on a 5-month trip around the solar system. However, the craft runs into a meteor storm, which disrupts its life support system and sends it into a long elliptical orbit of the Earth. In the year 2491, Ranger III again approaches the Earth, and is intercepted by the alien flagship Draconia, which is on a peace mission to Earth. Aboard the Draconia, Buck is revived by Princess Ardala and her second-in- command, Kane, whose true plan is to attack and conquer Earth. Buck is sent to Earth with a hidden homing device, which is soon discovered by Earth's Defense Directorate. After Buck convinces the humans of his true identity -- a man from the past -- he helps them to repel the Draconians' attack, with the aid of the mechanoids Dr. Theopolis and Twiki.