With the help of a rogue scientist's gadgets, a 24th Century space pirate successfully robs bank after bank throughout the solar system. Desperate to thwart the master criminal, the United Planets orders Commander Corry to transport their remaining funds to a secret artificial planetoid. Anticipating such a move, the galactic cutthroat hides a hidden speaker in Carol's medallion so he can listen in on the Space Patrol's every move.

Captain Dagger manages to escape custody while Buzz and Happy are replacing the loot stolen from the Space Vault. He then heads for his secret hideout on Venus with both the Terra 5 and Robbie's ship in hot pursuit. Can the Patrolmen find the elusive pirate, his gang, and the rest of their purloined goods.

Commander Corry has managed to retrieve a vital piece of microtape from a space criminal named Johnson, when he, his prisoner and his wounded cadet, Happy, are captured by a tribe of beautiful Venusian amazons. The women have no use for males except as slaves and, when Corry refuses the office of slavemaster, the criminal, Johnson, is only too glad to accept. He uses his new-found freedom to abduct Happy to force Corry to tell him where he's hidden the microtape.

Commander Cory and the Space Patrol think they may finally have Proteus trapped at one of the plants on Venus. The question remains can they finally capture the man who threatens to bring the whole United Planets economy to its knees.

In an attempt to retrieve his stolen 6 million credits, Proteus sends Estaban to Terra. Buzz first captures and then allows Estaban to escape to trail him to Proteus. Will Buzz and Happy avoid the taps set by the wily master criminal?

The former adviser to the long-deposed King of Venus plots to return the despot's son to power by use of the Z ray, a mind-controlling device, and a time-traveling spaceship which allows the two men to rob banks and disappear into the past. Commander Corry and Cadet Happy take the only rocket in the Space Patrol fleet with time-traveling capabilities and pursue the criminals back to the 20th-Century.

Corry and Happy trace Zarra and Groata, two time-traveling criminals, to 20th Century Earth. While trying to pinpoint their location, the Space Patrol men arouse the suspicions of a police detective who suspects they know more about a series of strange events that have occurred recently in his city than they are letting on. Corry and Buzz trace the two criminals to Zarra's bookstore where, under the influence of Zarra's Z-ray, they are forced to reveal the presence of their scout car - the only way they can return to their spaceship orbiting high above earth. While the crooks make their escape, Corry and Happy fear they are marooned in time.

Commander Corry and Cadet Happy pursue time-traveling master criminals Zarro and Groata into Twentieth-Century earth. The crooks help Indians capture Corry and Happy and convince the tribe's chief that the Space Patrol men are evil spirits and must be burned at the stake.

Having now made repairs and left the planet the crew of the battle cruiser are faced with the realization they are now lost in space. As they search for an answer the planet has one last surprise for them.

Commander Corry and Cadet Happy resume their search for the lost treasure of the Carnigans, while trying to avoid a gang of criminals who plan to steal the gold and jewels. Corry manages to unravel one of the Carnigans riddles concerning the treasure's location only to find it leads to another that warns of death and destruction should anyone but a member of that civilization attempt to remove it from its hiding place.

With the city collapsing around them, Buzz and Happy lead the criminals into the the Carnigan pyramid where they are trapped under tons of debris. Can the commander find a way out before the air supply is exhausted?

Agent X is spotted on Venus and Space Patrol give chase. Corey suspects based on the last known location, Agent X is leading them into a trap involving the oceans of Venus.

An invisible entity, Manza, is abducting Space Patrolmen and transporting them to its planet. There it forces them to fight in its defense against the planet's' original inhabitants who have been driven away. Can Buzz and Happy find and then rescue their fellow patrolmen?

When Major Robertson and other members of the Space Patrol are abducted by Manza, an invisible being from a solar system light years from Terra, Commander Buzz Corry and Cadet Happy race to the rescue. While Manza tortures Robbie in an effort to force him to blow up Buzz and Happy, the Space Patrol officers attempt to sneak into Manza's fortress and rescue their friend before he comes to harm. Meanwhile a squadron of Icarians trying to regain their homeland hovers above the planet as they prepare to bombard Manza's fortress with deadly heat rays.

Commander Buzz Corry's attempts to assist the Icarians, a race of humanoids fighting to regain their planet from an invisible tyrant called Manza. His plans are short-circuited when Major Robertson, Cadet Happy and Carol are captured by the being and imprisoned on the planet's surface. Corry goes to the fort where his friends are held to try to rescue them but gives orders for the Icarian squadron to resume their attack on the planet if he does not radio them within 15 minutes that he has achieved his objective.

Space Patrol arrive at Pluto 3 to question and possibly arrest Doctor Kurt, the owner of a sanitarium operating on the planet. A number of patients seem to have had their personalities changed and display unusual loyalty to the doctor.

Buzz and Happy return to Pluto 3 yet again to attempt to arrest Doctor Kurt, but first they have to get passed his 'super' guards.

While Robbie returns the normalized giants back to Terra, Buzz and Happy remain on Pluto #3 to search for Dr. Kurt and Atlas. However, the tables are turned when the Patrolmen are themselves captured and forced to be the quarry in a deadly manhunt. Can Buzz and Happy elude their giant pursuer for long?

Happy is put in danger when a new experimental time traveling space craft is stolen and flown into the past to 1956.

Having located the Terra-5, Buzz and Happy take off in pursuit of the X-RC and its pilots. They track them to the office of Dr. Yates where Stanger and Gregory are seeking medical aid for the radiation received from the atomic blast cloud.

Professor Van Meter becomes alarmed when he discovers a succession of stars exploding and the path of destruction leads directly to Sun. Corry, Happy and Robbie are attempting to determine the cause of the novas when their spaceship is battered by yet another exploding star

Ahyo, the super-intelligent alien whose mission is to destroy our entire galaxy, falls victim to an old-fashioned belt on the button administered by Commander Corry. Ahyo's advanced weapons prove worthless against the fury of Corry's fists when Ahyo attempts his annihilation of the Solar System by sending the planet Terra to collide with the sun.

Aboard the Terra-5, Prince Baccarratti takes over the ship and returns Buzz and Happy to Colonial America of 1692 to be burned at the stake as practitioners of black magic. Can they turn the tables on the Black Falcon?

Judged guilty of perjury and witchcraft, Prince Baccarratti is sentenced to death. Should Buzz and Happy rescue the Black Falcon and return him to the 30th Century? And if so, how?

Having captured Prince Baccarrati and his henchmen in Salem, Massachusetts at the height of the witchcraft hysteria in 1692, Corry and Happy attempt to return clothing they borrowed from a friendly colonist before the woman's husband and son discover the garments are missing. The Space Patrol men are too late, for Goodwife Martin has been accused of witchcraft by her husband, the town magistrate and Baccarrati escapes, planning to maroon Corry and Happy in 17th Century Massachusetts before returning to his life of time-traveling crime.