A fateful shower of lunar fragments shoots through the atmosphere of New Mexico. A meteorite particle strikes young mineralogist Paul Carlson - and an awful transformation begins to take place. Recuperating in bed, Paul responds to the rising of the moon and staggers out into the desert. The next morning a man is found dead - the victim of some kind of beast. A series of slayings linked to the moonrise begins. Paul's professor John Salinas, an American Indian known as Johnny Longbow, identifies the track of the killer beast as that of a million-year-old reptile. A creature of ancient Indian legend is on the prowl - and Longbow and the police discover, to their horror, that the Moon Beast is none other than Paul, who is helpless to stop his transformation into a hideous monster! Actors: Chase Cordell, Doona Leigh Drake, Gregorio Sala, Patrick M. Wright, Francine Kessler, Timothy Wayne Brown, Crawford Maccallum, Jeanne Swain, Alan Swain, Fred McCaffrey, Tim Butler, Gary Kanin, Frank Larrabee, Joe Blasco.