The
Mysterons announce that they intend to destroy
London. Aided by
Captain Black, they use their powers to seize control of a transporter truck carrying a nuclear device through the city. The transporter and its driver, Macey, are sealed inside Park View, an underground car park. Macey, who was knocked out during the hijack, wakes up not knowing where he is. Turning on his radio to hear
Big Ben strike midnight, he is surprised to hear 13 chimes instead of 12. The Mysterons start the nuclear device's 12-hour detonation countdown then knock Macey out for a second time and dump him in a
side street. In response to the device's disappearance, Spectrum is put on red alert. Macey is found by
Captain Scarlet and taken to
Cloudbase to relate his ordeal to
Colonel White. Although there are more than 2,000 car parks in London that match Macey's description of Park View,
Captain Blue narrows these down to Park View and one other after remembering Macey's claim that Big Ben struck 13 and calculating that the car park must be within one mile of Big Ben. With less than an hour to go before detonation, Scarlet and Blue fly to London, proceed to Park View in a
Spectrum Pursuit Vehicle and locate the device. As the defusing procedure would take too long, White orders the captains to drive the transporter to its intended destination – a nearby construction site – and leave the device to detonate in a specially-prepared underground excavation. With just minutes to spare, Scarlet and Blue reach the site and Blue lowers the transporter, driven by Scarlet, into the excavation using a large elevator. Scarlet abandons the transporter and begins his ascent, but seconds later the device explodes, obliterating the elevator shaft. Scarlet is fatally injured but recovers thanks to his powers of accelerated healing. Later, while dining at a restaurant with Scarlet, Melody Angel and Destiny Angel, Blue explains how he was able to work out the car park's approximate location and why Macey thought he heard Big Ben strike 13. In reality, Macey was hearing two sets of chimes: one on the air, the other on his radio. However, the former were delayed by the
speed of sound, so the "thirteenth" chime was actually a repeat of the twelfth that had already sounded over the radio. Following this explanation, Scarlet decides to make 13 his "lucky number". ==Regular voice cast==