Grandparents take centre stage in this charming tale as a young boy and his grandfather let their imaginations take flight for an afternoon of space exploration, with beautiful artwork from Hannah Coulson. Sherman loves the moon and he loves his grandpa even more - who has actually been to the moon! Grandpa was an astronaut and has a chunk of moon rock on his mantlepiece. Playing space games with Grandpa is one of Sherman's most favourite things ever so he's thrilled to hear that's exactly what a visit to Grandpa will involve.