In the course of the hour-long documentary, the viewer is introduced to each of International Rescue's gadget-tastic vehicles. There's the 15,000 mph Thunderbird 1 rocket piloted by Scott Tracy; the freight-carrying Thunderbird 2 with its six different rescue machine pods piloted by brother Virgil; the space rocket Thunderbird 3 with Alan Tracy at the helm; sub-aquatic Thunderbird 4 with Gordon Tracy aboard; and the orbiting space station Thunderbird 5 overseen by a rather solitary John Tracy. Brains then introduces us properly to each of the brothers, their father Jeff, gorgeous London agent Lady Penelope and her butler Parker, and even warns us about their deadly enemy, The Hood.