Now in "Area 51: The Mission," the members of an organization sympathetic to the aliens unleash their revenge -- a biological weapon that could destroy humanity. A modern Black Death threatens to send the world back to the Dark Ages unless an eclectic group of soldiers and scholars can stop them. In South America, an archaeologist must discover what secrets are concealed by the pyramids of a lost city. In China, a bandit and a university professor team up to solve a mystery involving the Great Wall of China. And in the United States, a special forces soldier must navigate through the most dangerous terrain in his life: the government's corridors of power. Only by cracking some of the oldest riddles in history can the future be secured.