When Billy finds the time crystal, something goes terribly wrong and his friend Kong the monkey becomes trapped inside it! The shimmering stone of supernatural powers is said to be a controlling device that can open the very portals 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. To save Kong, Billy must solve the riddle of the temple and defeat the guardians of time!