When Jamie's mother inherits a small Irish island and moves her little family, her troubled son sees a chance to start over after suffering from cancer. Jamie learns that he is heir to an ancient title - Laird of Muck, Guardian of the Passage and realises he has certain otherworldly responsibilities. With the help of a mysterious object he discovers in the old lighthouse, Jamie sets out on a dangerous interstellar mission that could change the course of his life and the universe forever.