Ever since he was in kindergarten, Leo has had a hard time making friends. He always has so much going on in his head, and his words come out so slowly that the other kids just run off to play without listening to him.

Things are different after he meets Ralph. Ralph is from a different planet, and he loves outer space, just like Leo. The two friends make up their own language and invent other planets. As the early school years go by, Leo and Ralph have such a good time together that Leo's parents worry that he is not making other friends.

When Leo's mother gets a job in another town, Leo reluctantly agrees to say goodbye to Ralph. Leo is in a new school now, in a higher grade. But when he doesn't quite click with his real-life classmates, Ralph comes back, and this time, Leo has to keep his old friend a secret. Until, with the help of his family, his new classmates, and his new teacher, Leo is finally able to say goodbye to Ralph for good.

A stellar novel about space, starting over and a friendship that's out of this world.