On a stormy night, a bus skids into a high-voltage wire, electrocuting all aboard except "Dynamo" Dan McCormick, a carnival performer immune to electricity. Seeing an opportunity, mad scientist Dr. Rigas uses Dan in his evil plot to create a race of electrically controlled men to do his bidding. But the experiments turn Dan into a monster whose lethal touch sparks a murderous rampage. © 1941 Universal Studios. All Rights Reserved.