Miyori's grandfather lives with his wife in an isolated mountain village bordering a significant forest. Following Miyori's parents' divorce, she is entrusted to their care. His home presents a dramatic shift from Miyori's former life in Tokyo. Though Miyori initially resents the move, life with her grandparents offers unexpected stability. He provides steadfast support as Miyori adjusts to the rural setting, navigates encounters with the forest spirits, and faces the conflict arising from a proposed dam project that threatens the woodland.