The story is told by a white cat called Alban. He is found abandoned in the snow by a boy called Sedu, who takes him home to the monastery where he lives. When Alban sees him lifting objects without moving, it becomes apparent that Sedu has strange magical abilities and it soon becomes clear that Sedu and Alban can communicate with each other without speaking. Together, they hide on the monks’ boat, and travel to a strange island that gives them the opportunity to understand more about their magical gifts. They discover that they have to find four treasures that were gifted to Mankind a very long time ago and return them. This first book tells the story of their search for The Sword of Light which has been hidden from sight for centuries. They set out on a series of dangerous adventures helped by a girl and her friend, a monstrous creature from the depths of a dark lake. The story is based on Irish myths and legends, with references to Ireland’s mystical places and magical folklore.