Ben and Ian Smith are completely space crazy. So when a strange ship of blue beings comes to St Louis they can't believe their luck. The Zeronian leader, Cosmos and his brother Orrin, need their help to save the strange planet of Zeron from destruction. Can Ben and Ian defeat the evil Quablos Alliance who wish to rule supreme in the Universe? Will they fulfill their destiny, and become the heroes they need to be? Can they unravel the mysteries surrounding The Sign of the Universe? The Sign is a fast-paced, action-packed adventure, full of strange alien beings, space battles, espionage and intrigue.