Walter Mitty is a shy, unremarkable man who escapes from his dull life through daydreams of adventure and romance. In the film, Ben Stiller plays Walter Mitty, who dreams of showing his feelings to a woman he likes but lacks the courage. His daydreams transport him to extraordinary scenarios until he unexpectedly finds himself embarking on a real-life adventure by traveling the world to track down a missing photo negative. The journey transforms Walter from a shy dreamer to a confident man through the new experiences and feelings he gains from the adventure.