Doraemon the Movie: Nobita and the Legend of the Green Giants

The story begins when Nobita finds a small sapling one day. Using Doraemon's plant growth accelerator, the sapling grows rapidly and gains the ability to think and act. The young tree becomes part of their group, eventually leading them to the Sacred Land of Plants. The people of this land are furious that Earth's pollution is causing lush green forests to disappear. The Princess of the Green Planet prepares to lead the sages in reclaiming Earth's trees, but she overlooks the sapling, as it houses the soul of a Green Giant, which they can use. As the Sacred Land takes action, the sapling, disappointed by Earth's pollution, awakens the soul of the Green Giant within it. The sapling transforms into a Green Giant, and Nobita and his friends must fight to reclaim him.