Doraemon: Nobita and the Green Giant

Doraemon and Nobita discover a small sapling that, with the help of Doraemon's Instant Plant Growth Liquid, rapidly grows into a full-grown tree that possesses the soul of the Green Giant. The tree becomes a part of the community and is eventually relocated to the sacred land of the Green Giant. However, the people of the sacred land become concerned as the Earth's pollution causes the green and lush trees to wither away. Determined to save their home, the princess of the Green Giant and the people of the sacred land decide to take the trees away from the Earth, disregarding the small tree that possesses the Green Giant's spirit. The tree's disappointment at the Earth's pollution awakens the Green Giant's spirit, and it transforms into the Green Giant. Meanwhile, Nobita and his friends try to rescue the tree.