The alumni cast of a space opera television series have to play their roles as the real thing when an alien race needs their help. However, they also have to defend both Earth and the alien race from a reptilian warlord.
When a computer geek inadvertently downloads critical government secrets into his brain, both the CIA and the NSA assign an agent to protect him and exploit his newfound skills.
An astronaut becomes stranded on Mars after his team assume him dead, and must rely on his ingenuity to find a way to signal to Earth that he is alive and can survive until a potential rescue.