While driving through the desert with his wife Carol Marvin to a military base to send the eleventh rocket to the orbit of Earth for helping the exploration of the outer space in the Operation Sky Hook, Dr       Russell A       Marvin and Carol see a flying saucer and accidentally records a message in their tape recorder       Once in the base, Dr       Russell is informed by his father-in-law and general that the ten first satellites had mysteriously felt on Earth       When Dr       Russell decodes the message, he encounters the aliens that ask him to schedule a meeting with the leaders of Earth in Washington in 56 days with the intention to invade Earth without panicking the population       Dr       Russell develops an anti-magnetic weapon that becomes that last hope of human race against the hostile aliens