Littlefoot leads the pack in The Land Before Time®: The Mysterious Island as the group of dinosaurs tries to safely get back home with the help of returning old friends. When a cloud of locusts descends upon the Great Valley and devours every plant in sight, the valley herds must search for a new home until the leaves grow back. Quarreling among the adults threatens to separate the herd, so Littlefoot and his friends set off on their own towards the shores of a mysterious island where they brave a tsunami and end up being stranded on the island. While looking for a way back home, they're reunited with Chomper, the adorable young Sharptooth who must protect his plant-eating friends from danger and threat.