Flyn and Sula offer to build a Ripper Ray to defend the Earth, but the Tomorrow People decline. John and Hsui Tai return to the Lab while Mike stays with Flyn and Sula. But Major Marcos arrives and knocks Mike unconscious. Meanwhile, the Galactic Federation have found the two thick ships. Flyn and Sula accompany the Major to see General Papa Minn. John jaunts to the Thargon thick ship to confront the Captain, who tells him that there are no slaves and no Overlords on their planet, and that Flyn and Sula are criminals. Flyn and Sula offer to show General Papa Minn how to build a Ripper Ray and use it to rule the Earth. After Mike regains consciousness he is told by Thing that the Thargon Overlords have re-captured Flyn and Sula, and so he returns to the Lab. Flyn, Sula and the General return to the slim ship, and the two aliens begin building the Ripper Ray. The Tomorrow People return to the slim ship but are seen by soldiers. John and Mike jaunt back to the Lab, but Hsui Tai is shot. Flyn, Sula and the General prepare to launch the slim ship so that the General can deliver his ultimatum, but John and Mike rescue Hsui Tai just before the slim ship lifts off, its blast destroying the island. The General forces Flyn and Sula to allow him to broadcast his demands, and to fire the Ripper Ray. The blast is detected by the Thargon thick ship, which heads for Earth.
Aired: 26 Jun 1978