“When I was a kid, I had a pet weasel. I think that’s a rather unusual pet for a kid to have. But I was a rather unusual kid.” Thus begins the story of a misfit boy who, in a spontaneous moment, buys a secret pet that sparks a series of fantasy adventures where the two travel through space and dream of living on the moon. Back on planet Earth, trouble arises when the boy’s pet escapes during a class field trip and turns an entire science museum upside down.