The Mysterons threaten to assassinate the Supreme Commander of the Earth Forces.
A 500-ton U.S. Army walker, the Sidewinder, falls into a pit during testing and International Rescue are called to save the crew trapped inside.
A cloud of space dust causes a mystery illness on Alpha; an Eagle crew is sent to discover its secrets, but the craft returns only with a strange beast that withstands all assaults and which Maya realises is not a life form. The senders of the beast want elements of Alpha's life support system.Intro special guest: Kate Harbour
Captain Thrice contracts Galactic Fever and without treatment, he could die within five days. The cure is an extract from the leaves of the Wumbo plant, found only in the Great Swamp on the planet Quagmire. But the Wumbo plants are fiercely guarded by the Danks, who want them all for themselves.Special guest: Kate Harbour
Torchy, Flopsy, and Pom-Pom decide to visit the toys who dwell in the mountain's caves. They discover the caves abandoned and find Gillygully and Whirly outside, claiming that a monstrous creature has moved into their turf. Torchy and Pom-Pom elect to investigate and discover Sparky, a lonely dragon who's been desperately searching for friends.Intro special guest: Georgina Moon
Brogan's informant Slik Ostrasky is murdered by Tylan Gershom, a smuggler of illegal Xyronite immigrants, and the only witness is slimy Melazoid business executive Armand Loyster. Brogan and Haldane are assigned to offer Loyster protection until he can testify at Gershom's trial. But Gershom plans to ensure that Loyster never reaches the courtroom.Intro special guest: Georgina MoonRandomiser special guest: Richard James
The head of a chemical company hires the Protectors to discover who stole company secrets and sold them to a rival.Intro special guest: Morgan Jeffery.
Dr. Beaker and Mike are taken prisoner by a tribe of headhunters while searching for a plant to cure an illness affecting Mitch.Intro special guest: Tom Eames
When a World Security Patrol submarine is mysteriously destroyed, Troy and Phones are assigned to investigate. However, they are captured by the Aquaphibians and sentenced to death by King Titan of Titanica.Intro special guest: Nicola Bryant.Episode special guest: Ben Page.
Yuri seals Battlehawk inside Hawknest after Battletank picks up a bomb while investigating a ZEAF.Intro special guest: Nicola Bryant.
A submarine has unwittingly malfunctioned in enemy waters and Joe must remove it to prevent political carnage.Intro special guests: Ronnie Le Drew and Sweep.
Fireballs fall to Earth from a mysterious gas cloud in space. The XL5 crew must contain the cloud before it reaches the atmosphere, but a technical fault forces Steve to complete the work by hand.Intro special guests: Ronnie Le Drew and Beaver.
The Protectors find themselves in the middle of a war over some antiques.Intro special guest: Prentis Hancock.
A new invention – the Crablogger (a nearly fully automated logging machine that converts wood into fuel) — threatens widespread devastation if it collides with an unfinished dam, after its drivers collapse due to food poisoning.Intro special guest; Prentis Hancock.
Zelda attacks Earth on Christmas Eve, convinced that the Terrahawks' guard will be down. However, Ninestein anticipates such a move, and all-out war erupts. Perhaps the Christmas spirit can even reach someone like Zelda....
Troy is assigned to recover a giant pearl from an ocean cave, but the task is not as simple as it seems.Intro special guest: Sadie Miller
Masterspy sabotages a prototype atomic-powered diesel train on its journey from London to Brighton in England in a bid to assassinate a VIP passenger. Dr Beaker and the rest of the Supercar team have been invited to drive the train, but will they be able to stop the sabotaged engine before the vehicle crashes into a station at the end of the line?
King Dithers decides to brush his hair before his trip to Frutown, and he accidentally leaves his crown behind. After Daffy the Donkey pulls him into town, the king invites Torchy and Squish back to the palace for tea, but they soon discover the crown is not where he left it.
Communications problems at Moonbase are traced to a non-SHADO mining operation.Intro special guest: Craig Morris.