When George chases his pet pig through a hole in the fence, little does he expect that he will soon be riding a comet around Saturn with an amateur ballerina. But just as he discovers the joys of space exploration with his fun new neighbors and their computer Cosmos, which can open doors anywhere in the universe, everything starts to go wrong. When George’s least-favorite teacher steals Cosmos and traps his friend’s dad in a black hole, can George set things right in time?