From the depths of the Indian Ocean rises a terrible plague threatening to destroy humanity. The nature of this deadly disease is unknown, and its spread cannot be stopped. Two scientists from the secret “Sigma” unit—Lisa Cummings and Monk Kokkalis—are sent to Indonesia to determine the causes of the ominous epidemic. Somehow, a symbol of the Order of the Dragon appears on the floor of the Vatican’s Secret Archive—an awful sect recently destroyed by Sigma’s team. Under the symbol there is an inscription made in the ancientst language on Earth—the language of angels. The archive keeper understands that this inscription may contain the means to save humanity.