Scott Carey enjoys a peaceful life with his wife, Louise, until he encounters a mysterious fog during a boating trip. Shortly after, he begins to notice subtle physical changes, such as his clothes becoming loose. Perplexed by these transformations, Scott consults doctors, who discover that he is slowly but irreversibly shrinking. As he diminishes in size, the world around him turns hostile and imposing; everyday objects become insurmountable obstacles, and even his home becomes fraught with peril.

His diminishing stature strains his relationship with Louise and presents unique challenges, previously unimaginable. Scott wrestles not only with physical dangers but also with the psychological torment of becoming increasingly insignificant. Each passing day exposes him to new threats as he fights for survival and grapples with existential questions about his place in the universe. His resilience is tested as he attempts to navigate an ever-growing world, leveraging his resourcefulness and tenacity to make sense of a reality where he must confront the limits of his human existence.