Sudden disappearances of robots from planets are reported to the World Space Patrol. Though a robot expert like Professor Himber can be harmless, he is suspected of these abductions. To try to trap him, Robert the Robot is sent into space, where he is lured to a planet called Robotvia. Steve, Venus and Professor Matt follows the robot at their own risk, unaware that the planet's Master might be someone they know...
—RealLiveClaude