A deadly bacteria code named The Andromeda Strain - is let loose after a U.S. government satellite crash-lands in Arizona. The bacteria unleashes a lethal plague that wipes out an entire town leaving only two survivors - an old man and an infant to provide clues to immunizing the population. As the military tries to contain the spreading disaster, only a hastily assembled team of scientists can hope to find a cure and stop the Andromeda Strain from spreading.