Set in a small city in Texas in the present, this is the story of two resourceful and courageous teenagers who must deal with unbelievable and wondrous forces in their quest to solve a mystery involving an ancient artifact.
Summer vacation for Arthur and Marya takes a very strange turn when a weird old man with a long white beard draws the two friends into an ancient mystery that they must solve in order to recover an artifact from the distant past. They soon learn that they are not the only ones who seek this relic; closing in on them are powerful evil forces that will stop at nothing to get their hands on it. With help from some very unlikely sources, Arthur and Marya unravel clues that lead them to their goal, only to discover that it is protected by creatures they never imagined. When they find themselves deep underground, with time running out and with nothing to rely on except their own courage and trust for each other, the teenagers must vanquish inhuman forces if they want to get out alive.
It is a mystery with many twists and turns. But it is also tells the story of how these two teenagers, at first skeptical, finally come to realize that, just as the old man told them, magic and wonder surround them every day.