Underdogs. The Valiant is captured by the robot inhabitants of Ruca, a race that has done away with humans. Ruca now has a king and queen robot and slave robots called drones. The robots recognise Gran, with her robotic leg, as being almost like them. They confide in Gran and with her inside knowledge, she is able to save the kids from being exterminated. Meanwhile, Zeke decides to see what life is really like as a dog, and joins Hobart in his kennel. He discovers he actually prefers it to working with Alice.