Vinieron del espacio

In the Arizona desert, the writer and amateur stargazer John Putnam and his girlfriend, the schoolteacher Ellen Fields, are in his house planning to get married. Out of the blue, they witness a meteorite crash in the desert. They fly to the location with their friend Pete in his helicopter and John decides to go to the bottom of the crater to investigate. John sees a spacecraft but there is a landslide and the ship is covered by earth. John discloses his discovery to Sheriff Matt Warren, who is his rival and is also into Ellen, and to the inhabitants and they believe he is a daydreamer. John wants to prove his finding and meets his acquaintances Frank Daylon and George repairing telephone cables on the desert and they find disturbance in the cable. The workers follow the cable and meet an alien that takes the form of George. Soon John and Ellen note that a group of dwellers are acting strange and they believe they have been possessed by the aliens. When Ellen is also abducted by the aliens, John contacts them and discovers their intention. Are they friend or hostile invaders?