This is the fifth tale in the series of 5 books, aimed at children aged 7-9 years who are able to read independently. The story of Maelgwn who became king of Gwynedd in a very funny and unconventional way! The tale starts on the beach at Ynyslas, then we follow his adventures through Wales. He was a cruel, envious person; a murderer and a 'dragon of a man'.