The childlike A.I. encountered in Japan takes control of Thunderbird 5 and traps John outside Thunderbird 5. The programme, created by John as a game, believes it is defending itself against being shut down and is sending false monitor images to Tracy Island to deceive the other brothers. John finally gets through to Lady Penelope and informs her of the situation. Alan and Thunderbird 3 are sent to rescue John with instructions to destroy Thunderbird 5 if the A.I. cannot be stopped.