A young colonist on Mars befriends a strange round creature called Willis who gets him into trouble when he goes away to school, but whose presence and friendship finally enable the colonials to negotiate a treaty with the Martians.

A small mouse and his best friend, a giant flying robot, attempt to save the Earth when an evil Martian monkey and his mechanical creations attack.

After heroically saving his classmates, fifth-grader Sawyer's life as a dinosaur-human hybrid has gotten a lot easier until Sawyer, Sylvie, who is part Martian, and Elliot head to Mars in search of Sylvie's missing dad and discover that Mars is trying to kick Pluto out of the solar system.

Twelve-year-old Mischa "Ish" Love's longtime dream has been to someday live on Mars, but when she collapses on the first day of seventh grade, Ish receives a diagnosis which threatens her future plans.

After moving to Mars with his family, Davey complains of being bored until he begins exploring the planet with his dog Polaris and uncovers a most unusual "treasure."

Michael Prasad knows he shouldn't go out on the Mars surface alone. It's dangerous. His parents have forbidden it. And the anxiety he feels almost every time he puts on a spacesuit makes it nearly impossible for him to leave the safety of the colony. But when his best friend, Lilith, suggests they sneak out one night, he can't resist the chance to prove everyone--including himself--wrong. As the two ride along the Mars surface in a stolen rover, miles...

A young colonist on Mars befriends a strange round creature called Willis who gets him into trouble when he goes away to school, but whose presence and friendship finally enable the colonials to negotiate a treaty with the Martians.

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

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.

The Roversaurs--half spacecraft and half dinosaur--call on the expertise of their fellow dino-machines, the Diggersaurs--half construction truck and half dinosaur--to help them build a Martian base.