Signals - Part 1.Through the use of 8 year old archive footage of the Zero-X incident, Brains informs the members of International Rescue of his shocking theory. But in order to gather more information, the heroes split into groups to search for an escape pod that has been missing since Jeff Tracy's crash. Scott, Virgil and Lady Penelope take Thunderbird 2 and the re-built Thunderbird 4 to search the area where the pod might have landed in the ocean. Meanwhile, Alan and Kayo take Thunderbird 3 to a space junkyard between the Earth and the Moon, where they meet the space pirates from the Eden ship, but Havoc is spying on them.