Buck masquerades as a convict to break into a prison in an attempt to rescue Jen Burton, who took the blame for a murder her boyfriend, a shipping pirate, really committed. The Earth Defense Directorate believes that she can supply information to put the pirate in jail. Breaking out of the underground prison, Buck and the woman head for a nearby spaceport for return to Earth, but they are pursued by an indestructible android prison guard.

Murder and romance await Buck, Wilma, Theo and Twiki aboard the cruise ship Lyran Queen. Buck befriends a shy young girl (Beck) while investigating the attempted kidnapping of beauty queen Miss Cosmos (Stratten) by a woman (Noble) with superpowers. To his surprise, Buck learns the true identity of the mystery woman as he seeks the location of Miss Cosmos before a deadly dissection laser kills her.

Princess Ardala returns with another plan to snare the man from the 20th Century. This time, she captures Buck by luring him aboard a phoney 20th Century spaceship like his Ranger III. Once aboard the flagship Draconia, Kane creates four duplicate androids of Buck in an attempt to have them pilot the Draconian Hatchet fighters in an attack against Earth.

The evil Lars Mangros plans to broadcast a subliminal signal during the next performance of the rock group Andromeda that will cause the youth of the galaxy to riot. Buck infiltrates Musicworld, where the broadcast will originate, in an attempt to stop the madman from destroying the galaxy's cities.

Buck journeys through a space warp into another universe, where he discovers that the peaceful planet Pendar is being threatened by the sinister war witch Zarina. The Pendarans enlist the aid of Buck and Princess Ardala, who had followed Buck through the space warp, and an unsteady alliance between the humans and Draconians is formed as Buck leads a combined fleet against Zarina's battlecruiser.

Buck journeys through a space warp into another universe, where he discovers that the peaceful planet Pendar is being threatened by the sinister war witch Zarina. The Pendarans enlist the aid of Buck and Princess Ardala, who had followed Buck through the space warp, and an unsteady alliance between the humans and Draconians is formed as Buck leads a combined fleet against Zarina's battlecruiser.