The Galaxy Rocket is headed to Mars. Meteor, the newest astronaut, is packed and ready for his first mission! The red planet. Thirty-five million miles away. Meteor's motto is: MARS OR BUST!

But when the names are called, Meteor the Mousetronaut is not on the list. He wants more than anything to see the big red planet. He has only one choice - he will stow away! His plan to hide quietly and eat crumbs seems foolproof, but could an unexpected turn in the mission make Meteor a hero and the first astronaut on Mars?