Torchy feels isolated as all of the toys secretively make plans for his birthday. Whirly overhears his wish for a little brother, so Pom-Pom visits Mr. Bumbledrop and makes him build one.

The Hood sabotages the Red Arrow aircraft programme. One of the planes crashes into the TV Tower in England during a brutal rain storm, and International Rescue is summoned to save the engineers inside the tower before it collapses; making their job trickier apart from the driving rain and winds at the site is that the Red Arrow's director, a long time friend of Jeff, is fired from the project and stays at Tracy Island, forcing the Tracys to draw him away and thus remain oblivious to International Rescue's existence.

Tailing the Paradox, Dr. Agon’s falcon, Trump, is sucked into a black hole and grows to gigantic size. The giant falcon attacks the Paradox, but accidentally swallows the half-timbered starship and Captain Thrice and his crew find themselves trapped in the giant bird’s belly!

Dr. Beaker films Supercar in action, and receives illegal footage of secret organisations.

Zodiac almost falls victim to sabotage at a Space City circus as part of a scheme by Mr and Mrs Space Spy to help alien nomads take over Earth.

While racing to apprehend a foreign assassin called Sakov, who has checked in to Greenways health clinic on the pretext of receiving experimental therapy, Unwin is unaware that his target has designs on the new additive chemical GK2, which when mixed with water produces a lethal compound as combustible as high-octane fuel.

Troy is poisoned by the Aquaphibians and Titan, who possesses the antidote, demands Marina in exchange for saving his life.

A space capsule escape pod from the Endeavor II, a manned mission to Jupiter which mysteriously disappeared fifteen years ago, returns to Earth with Lieutenant Green's father, Commander Lewis, aboard. Believed lost, he wastes no time catching up with his daughter, but when he arrives for his debriefing at the International Space Agency, he is revealed as a Mysteron agent and takes Green hostage inside a bunker containing an antimatter reactor that is rigged to blow, leaving nothing but a smoking hole from California to Texas and taking 8 million people with it.

Foster is stranded on the Moon's surface, where he befriends a similarly stranded alien.

A French intelligence chief, known publicly as a leading fashion designer, is targeted by Mysteron reconstructions of two of his models.