The film starts with Lily narrating a dream to Paul about a depleted Earth and a red moon called Lumina heading towards it. Earth is protected by a magnetic shield, but an astronaut disappears trying to stop the moon. Paul explores the desolate Earth and meets Caesar, who offers him a flying car. Caesar warns Paul about the dangers outside the wall but sells him the car. Paul sets off on a risky journey, determined to uncover the truth about the world beyond the safety of the wall.