In October 1943, the United States Navy conducted a secret test of an artificial strong magnetic field in Philadelphia, known as the Philadelphia experiment (The Philadelphia Experiment), which successfully put a destroyer and its crew into another space. In the course of the experiment, the experimenter turned on the arterial and non-pulse devices, creating a huge magnetic field around the ship. Then the whole ship was shrouded in a green light, and the ship and its crew began to disappear from sight. By the time the experiment was terminated, the ship had been transferred to Norfolk, 479km away. His granddaughter tries to revive the World War II Philadelphia experiment.