In a quiet American town, Scott Carey is an ordinary man leading a peaceful life with his wife, addressing the typical concerns of everyday life. However, his world takes an unexpected turn when, after a mysterious exposure to a radioactive mist, he begins to undergo a strange transformation: he is slowly shrinking at an alarming rate. As his stature diminishes, Scott faces a world that becomes increasingly threatening and gigantic. A mere mouse turns into a deadly predator, and his own furniture becomes imposing obstacles in his path.
As he struggles to adapt to his new reality, Scott experiences the frustration of being perceived as an insignificant being, both physically and emotionally. His relationship with his wife also becomes strained as she tries to understand his situation while feeling increasingly distant from the man she once knew. With the pressure of his environment and his own despair, Scott embarks on a harrowing quest for survival and seeks to find meaning in his existence in a world that diminishes him at every turn.
As his size continues to decrease, he encounters profound dilemmas about humanity and existence, becoming a powerful metaphor for individual struggles. On a journey of introspection and courage, Scott must confront not only the physical dangers that lurk around him but also the fears that invade him from within.