Having broken into a burial sanctuary hidden in a cave in the remote Rocky Mountains wilderness, two young people undo an ancient curse—and this sets off a chain of catastrophic events that threatens the very existence of humankind. In this cave, beside the remains of strange pale-skinned Indians, lie many golden plates inscribed in an unknown language, as well as the sacred totem of that people—a saber-toothed tiger’s skull. Inside it is a mysterious substance which, once set free, instantly begins to consume the surrounding matter, turning it to dust—and this process cannot be stopped. A special unit, “Sigma,” joins the solution to this deadly problem for all living things on Earth…