In a monotonous and gray everyday life, Walter Mitty is a hopeless dreamer who escapes his dull job at a magazine through vivid fantasies. In his imaginary world, he becomes a bold hero, a pilot on rescue missions, and an intrepid adventurer. However, the reality of his life is marked by shyness and a lack of confidence, especially when it comes to his relationship with the enchanting Pamela, a woman he secretly loves.
Everything changes when Walter finds himself caught in a conspiracy related to an article he must produce for the magazine. As the dangers become more real, his imagination intertwines with real life, causing Walter to face unexpected situations that go beyond his wildest fantasies. His quest for truth takes him from the streets of New York to the breathtaking beauty of exotic places, where life transforms into an adventure worthy of his dreams.
Throughout his journey, Walter not only seeks to unravel the mystery behind his job but also embarks on a personal journey of self-discovery. With the support of new friends and a newfound sense of purpose, he must ultimately learn to merge his dream world with reality, confronting his fears and discovering what it truly means to be a hero in real life. The film is a celebration of what it means to dare to dream and, at the same time, take the leap into action.