In the middle of the jungle, Professor Grimm has constructed an "experiment": an entire town populated by robots (and a few captive humans). Bart Howland and Dave have chanced upon the town, and are not allowed to leave. When Dave runs over a robot with his jeep, he's charged with murder and taken to court.; Tod Sheppard, retired demolition expert, is called back into service when the army discovers a rocket from outer space that appears to be ticking.; Due to an electronics fluke that "might occur once in every fifty billion tries," a scientist's mind is transferred into a beetle, which somehow causes the beetle to grow to enormous size.