Episode Title:Earthbreaker.Episode Description:A geological survey team becomes trapped when a huge earth-breaking vehicle, controlled by a villain known only as the Mechanic, causes them to fall into a narrow crevice. International Rescue launches Thunderbirds 1, 2 and Shadow while the Global Defence Force attempt to tackle the Mechanic. When Thunderbird 2 is badly damaged and must return to Tracy Island, and the GDF is neutralised by the Mechanic, Kayo is left to stop him and his drones while Scott must rescue the survey team. Meanwhile Lady Penelope and Parker visit the Hood in solitary confinement in Parkmoor Scrubs prison, as they believe he is behind the mysterious Mechanic.