Georgie and Jem aren't just best friends anymore; now Georgie's mum and Jem's dad are together, they're going to be sisters! School is a bit more challenging. Miss Eagle wants the whole class to start a self-esteem project. They'll write their biggest secret on a piece of paper and then float them up into the sky on a balloon and their worries will disappear. Then disaster! The ball of secrets disappears instead and suddenly no one's secrets are safe.