After being expelled for nodding off in class, young Tistou embarks on a unique learning journey under his father's guidance. Guided by the wise gardener, Tistou discovers his magical ability to make plants bloom with a touch. Through encounters with various town figures like the strict factory manager, Tistou explores concepts of order and justice by witnessing the realities of prison, poverty, and healthcare. Empowered by his green thumbs, he endeavors to transform the world for the better. However, a pivotal revelation about his family's involvement in war challenges Tistou's perception of his impact on the world.