In a post-apocalyptic desert landscape, Felix Crab and his wheelchair-bound sister Betty live in an isolated homestead. They spend their days dreaming of escape and constructing a bizarre flying machine. One day, a mysterious stranger named Smith arrives, seeking refuge from a violent past. The siblings' peaceful existence is disrupted as tensions rise and secrets are revealed. Smith is initially treated with suspicion, but soon becomes an integral part of their world, assisting in the construction of the flying machine while hinting at ominous dangers beyond the desert's horizon.

The group's fragile equilibrium begins to unravel as personal ambitions clash, leading to conflicts that test their trust and resilience. Felix's dream of flight becomes a desperate obsession, driving him to risky measures. Betty, torn between loyalty to her brother and her growing bond with Smith, struggles to mediate the escalating tensions. As the outside threats draw nearer and the trio's relationships become increasingly strained, their quest for freedom turns into a fight for survival. The desolate landscape, strange inventions, and complex characters intertwine, setting the stage for a gripping climax that explores themes of escape, loyalty, and the human spirit in the face of adversity.