Beyond the Great Valley lies an island of beauty and mystery. In this wondrous place, Littlefoot, Cera, Spike, Ducky and Petrie will discover old and new friends, face exciting challenges, and share the adventure of a lifetime! It's a brand-new, song-filled, animated classic as the ongoing story of The Land Before Time continues. One day, a cloud of "Swarming Leaf Gobblers" descends upon the Great Valley and devours every plant in sight. Now the once-lush landscape is barren and empty, and the Valley herds must search for a new home until the leaves grow back. But when quarreling among the adults threatens to separate them, Littlefoot and his prehistoric pals set off on their own. Their search takes them across the Big Water where strange creatures live and swim to the shores of a mysterious island where they become reacquainted with Chomper, the adorable young Sharptooth from The Great Valley Adventure! This time, the tables have turned and Chomper must protect his plant-eating friends from the Sharpteeth of the island including his own parents! With dazzling animation, memorable songs, and a story of courage and generosity, The Land Before Time: The Mysterious Island celebrates the gift of lasting friendship, a bond greater than time, separation and differences.