In the distant future of 1990, Earth has established contact with an alien civilization. A distress signal from an alien spacecraft is detected on Mars, prompting an international mission to rescue the occupants. Astronauts Anders Brockman, Laura James, and Paul Grant are dispatched to investigate, led by their commanding officer, Dr. Farraday. They discover a lone female alien survivor with mesmerizing green skin and enigmatic abilities. The crew rescues the alien and brings her aboard their ship, unaware of the potential danger she poses.

As they embark on their journey back to Earth, they begin to notice strange occurrences and behavioral changes within their team. The alien's seductive nature and mysterious powers raise tensions among the crew members. The astronauts' failure to fully understand the alien's motives soon leads to unforeseen consequences, placing everyone on board at risk. They must confront the reality of their visitor and make critical decisions to survive the voyage home while grappling with the ethical dilemmas of interspecies interactions and the unforeseen perils of space exploration.