In the years following World War I, the famous writer A. A. Milne returns to his home in the Sussex countryside in hopes of rebuilding his life after the trauma of the war. With his wife Daphne and their young son Christopher Robin, Milne seeks refuge in the tranquility of nature, distancing himself from the pressures of post-war London. However, the arrival of the child brings with it a new perspective on life and happiness.
As Milne feels inspired by his son's imagination, he begins to write stories that bring to life a universe filled with tumbles and adventures, featuring a teddy bear named Winnie the Pooh. What starts as a way to connect with his son soon becomes a global phenomenon, leading the family to fame and fortune. But success also brings a series of challenges, as public life transcends family privacy and Christopher's childhood becomes a spectacle.
The story illustrates how the legacy of Winnie the Pooh affects not only the world but also the relationship between father and son, which is threatened by pressure and expectations. Throughout his journey, Milne confronts his own demons and the loss of innocence, questioning the true cost of fame in his family's life. The film is an emotional portrayal of the struggle between creativity, parenthood, and the desire to protect those we love.