Thunderbirds/Recap/F2 Thunderbird 6

The New World Aircraft Corporation gives Brains an open invitation to design a new aircraft. When he suggests an airship, he is mocked and ridiculed, although the NWAC go ahead and build Skyship One. While Alan, Tin Tin, Lady Penelope and Parker travel on the Skyship's maiden voyage as International Rescue's represenatives, Brains remains on Tracy Island, designing Thunderbird 6. Each of his designs is dismissed by Jeff Tracy.

Unbeknownst to International Rescue, however, the Hood is moving against them once again. Tired of merely taking photographs, he plans to hijack the Thunderbirds themselves. His agents murder and replace the crew of the airship, and plant recording devices around Lady Penelope. Their plan is to Quote Mine her to summon the Thunderbirds to the Hood's remote base, where he will be able to steal those magnificent machines. Unfortunately for the villains, Alan works out their plan, and Lady Penelope is able to warn International Rescue just in time. Thunderbirds 1 and 2 destroy the Hood's base. On the airship, however, things aren't going so smoothly. A gunfight disables the ship's antigravity system, and it plunges towards a British missile base. All the Thunderbird craft are too heavy to attempt a rescue - except the antique Tiger Moth that Alan and Tin Tin had flown to meet the airship. Brains flies the Moth onto the top of the airship, scooping his friends clear in the nick of time. Despite battle damage, Brains is able to land the plane safely. The Tiger Moth is then declared the new Thunderbird 6.