A year after she discovered a tiny dragon on the beach, life is getting back to normal for Mari Jones and Gweeb, when two unexpected events turn it upside down again. First comes the news that Mari's mum Rhian is expecting a baby, meaning that her boyfriend Gareth and Mari's best friend Dylan will be moving in with them on the farm. Even more incredibly, Gweeb's family have returned to lay their eggs in the same cave where Mari first found her secret...