The Detective Boys attend the final opening day of a theatre as it is about to be demolished. They plan to watch three films of Gomera, a parody of Godzilla. During the second film, the man who bought and planned the demolishing of the theatre is found hanged. The four suspects are the theatre clerk, a photographer, theatre manager, and projector technician. The episode ends with Mitsuhiko proclaiming he saw the theatre clerk looking at herself in the mirror.