When a typical American small town finds itself being transported through space the mayor hits upon the idea of ordering all the townspeople to dress outlandishly and do crazy things in the street so that they won't be typical and the aliens will lose interest in studying them. It works.
Fish men plot to take over the surface, but when they actually venture up there, they find the limitless space psychologically discomforting and the sun burns their skin. They return to the home beneath the waves that they are familiar with.
A soldier who had amnesia in the war feels driven to find out the name of the one who betrayed his squad to the Germans so he pulls a gun on the mayor of the town the ambush occurred in to make him talk. The mayor begs him to let the past rest, but the man insists. The mayor tells him that his amnesia has prevented him from recalling that he is the betrayer.
A car thief invents a camera that allows him to shrink cars. The police become suspicious of him when multiple cars that he has photographed are reported as stolen and pay him a visit. He turns the camera on himself and after he has shrunk down, realizes that he has no way to activate the camera to restore himself to normal size.