Cyfres Cawdel: Dirgelwch Gwersyll Glan-Llyn
A story about a group of friends at the Urdd campsite, Glan-llyn. The main character, Glyn, and his best mates, Jac, Deian and Rhodri, are mischievous lads. They often get on Mr Llwyd's nerves, and he doesn't manage to control his pupils very well.