The film's main character is Jack Thornton (Kevin Costner), a former baseball player turned drifter who stumbles upon Home while wandering through the desolate landscape. He is initially a loner, but he gradually forms a close bond with the community and finds a purpose in life.
As the story unfolds, Jack discovers the true nature of the environmental catastrophe and learns about the power structures and conflicts that led to it. He also uncovers the secrets of his own past and comes to terms with his role in the world.
Home depicts a stark vision of a future where humanity has caused extreme environmental damage and is struggling to survive in a harsh and unforgiving world. It explores themes of unity, cooperation, and the search for hope amidst adversity. Despite its bleak setting, the film ultimately delivers a message of resilience, redemption, and the human spirit's ability to endure.