The story begins as policemen investigate the destruction of Dr. Stone's office, the latest in a series of attacks on optometric facilities. After they leave, Dr. Stone realizes that his own glasses are broken and decides to try a pair of prescription lenses designed for patients who suffer from double vision, lenses made from meteoric quartz. Putting on the glasses, he recoils in horror as he sees a creature that appears to be made of "energy". The creature attacks him, smashing his glasses, steals a page from Stone's notebook on which are written the names of patients who have been prescribed the lenses, and quickly vanishes.