"Spring and Chaos" is an anime film that explores the life of Kenji Miyazawa, a renowned Japanese poet and author, blending biographical elements with surreal and fantastical storytelling. The narrative is structured around Miyazawa's experiences, dreams, and philosophical reflections, often depicted through symbolic and metaphorical imagery. The film opens with Miyazawa as a young boy, deeply connected to nature and fascinated by the cosmos, themes that recur throughout his life and work. His childhood in rural Iwate Prefecture is portrayed as idyllic, yet marked by a growing awareness of the suffering and impermanence inherent in the natural world.

As Miyazawa matures, his passion for literature and his desire to alleviate human suffering through art become central to the story. The film delves into his struggles with societal expectations, particularly his father's disapproval of his literary pursuits, and his eventual decision to dedicate his life to writing and teaching. Miyazawa's works, such as "Night on the Galactic Railroad," are woven into the narrative, reflecting his inner thoughts and existential musings. The film frequently transitions between reality and dreamlike sequences, blurring the lines between Miyazawa's imagination and his lived experiences.

Key characters include Miyazawa's family members, particularly his father, who represents traditional values and pragmatic concerns, and his younger sister, Toshiko, whose illness and death profoundly impact him. The film also introduces allegorical figures, such as anthropomorphic animals and celestial beings, which symbolize Miyazawa's philosophical ideas and emotional states. These elements create a layered narrative that intertwines Miyazawa's personal history with his creative vision.

The climax of the film centers on Miyazawa's realization of the transient nature of life and his acceptance of suffering as an integral part of existence. This epiphany is depicted through a series of surreal sequences, culminating in a poignant reflection on the interconnectedness of all living beings. The film concludes with Miyazawa's legacy, emphasizing his enduring influence on Japanese literature and his timeless exploration of universal themes. Through its unique blend of biography and fantasy, "Spring and Chaos" offers a profound and visually striking portrayal of Kenji Miyazawa's life and artistic journey.