Dinotopia

When two boys crash-land on an uncharted island, Cyrus Crabb (David Thewlis, "Harry Potter") guides them to a world where talking dinosaurs live in uneasy alliance with humans.

While bickering, the boys fall into the cascade and drift along the river. A friendly Troodon named Zippo comes to their rescue, and together they discover an entry to the forbidden Underworld.

When an unknown force begins to break the legendary sunstones, Dinotopia is thrust into chaos. The brothers escape arrest and set off to join Cyrus on a quest for stones - and a way off the island.