Children's animation featuring Tom the Dinosaur. While taking a tour of his homeland, Tom is swept away by a terrible storm. He lands on the New York coastline and meets the Hamilton Circus, and together they see the world. Rupert is visited by Professor Amadou. Tom, Rupert, Tip and Wanda accompany him on an expedition, and they stumble across a hidden Mayan city. The Mayans, still living there, are worried that the discovery will compromise their way of life.