The shimmering stone of supernatural powers is said to be a controlling device that can open the very portals of time. When Billy finds the time crystal, something goes terribly wrong and his friend Kong the monkey becomes trapped inside it! To save Kong, Billy must solve the riddle of the temple and defeat the guardians of time! His new-found quest sends him back in time to the frozen waste of the ice age, the sand-swept cities of ancient Persia, and the swashbuckling shores of the Caribbean.