A pair of agents from the Office of Scientific Investigation (OSI), Dr. Jeffrey Stewart (Richard Carlson) and Dr. Dan Forbes (King Donovan), are sent to investigate a local appliance store. All of the store's clocks have stopped at the same time, while metal items in the store have become magnetized. A source for this is traced to an office located directly above the store, where various scientific equipment is found, along with a dead body. There are also signs of radioactivity, but the exact cause of the store's anomalies is clearly no longer in the room or even in the immediate area.