When astronauts land on Mars, their first discovery is a substance not unlike pie filling and Kate and Henry are eager to go taste some, but Grandpa, who may have some inside information, discourages them.

Captain Cat and Pilot Matt fly their spaceship off to Mars, where they make new friends among the stars.

Bell has spent his whole life -- all eleven years of it -- on Mars. But he's still just a regular kid-he loves cats, any kind of cake, and is curious about the secrets the adults in the US colony are keeping. Like, why don't have contact with anyone on the other Mars colonies? Why are they so isolated? When a virus breaks out and the grown-ups all fall ill, Bell and the other children are the only ones who can help. It's up to Bell -- a regular kid...

Built to explore Mars, Resilience begins to develop human-like feelings as he learns from the NASA scientists who assembled him, and as he blasts off and explores Mars, Resilience must overcome different obstacles as he explores the red planet.