Follows a simulation of what it might be like to be an astronaut on Mars, with celebrity contestants competing to be the last one standing, the "celebronaut."
Genre: Reality-TV, Sci-Fi
Cast:William Shatner , Tinashe , Porsha Williams , Adam Rippon , Marshawn Lynch , Ariel Winter , Lance Armstrong , Cat Cora , Paul Pierce , Ronda Rousey , Natasha Leggero , Andy Richter , Tom Schwartz , Richard Sherman , Tallulah Willis , Ashley Iaconetti , Christopher Mintz-Plasse
The remaining celebrities must figure out how to replenish their water supply.
The 10 remaining contestants brave the elements of the Martian desert when a fire breaks out.
The contestants are sent on a mission which tests their perseverance; two are eliminated.
Four new crew members land on Mars, but their supply craft goes off course and crashes.
The celebronauts must work together to plug holes in the walls of the hab caused by meteors.
A technological virus has taken over the artificial intelligence system, and two celebronauts are stuck outside in the harsh Martian climate; the crew must work together to reset the software before it's too late.
A series of solar flares have interfered with the electronics in the hab, and the nine remaining celebronauts will need to repair the solar panels, working fast before another solar flare brings dangerous radiation. This mission tests the contestants trust and will earn them another mission patch.
The remaining celebronauts discover they are not alone on Mars; someone or some thing is coexisting with the crewmates and could threaten their survival if they don't act fast; this mission tests the contestants' adaptability.
The seven remaining celebronauts must find the hab's missing house pet, Raddog.
With only six celebronauts left, the mission on Mars is almost complete; the hab detects a weak distress signal that the crew must investigate immediately; they need to split up into two teams to find the source of the distress signal.
The remaining crewmates must correctly answer trivia questions from the hab manual and advance to the final challenge, where they must properly assemble a satellite tower and broadcast a personalized message to Earth.