Lawrence Tuckerman is a fan of probabilities - well, any numbers and math, really. It's an interest that goes hand-in-hand with his autism. It's also how he met his best friend Zeke, who is off fulfilling his dream of playing basketball at the University of Kansas. Now Lawrence expects his life in Los Angeles to become even less social and more routine - just the way he likes it. He plans to finish high school as he pursues his own far-off dream of manning Earth's first mission to Mars ... Then the improbable happens: Lawrence is recruited for a top-secret mission of cosmic proportions! The whole operation relies on him realizing the full potential of his 1-in-6-billion mind - without freaking out. The rocket-science math is a no-brainer, but is he made of the right stuff to manage the communication and cooperation of a team effort ... without his best friend?