Even though Cotton dreams of a distant land of golden apples, he believes that he is an ordinary cat in a bookstore. When he encounters an Irish muse, however, he learns that he may be the shape-shifting Pooka that was exiled from medieval Ireland by the high king, Brian Boru. He returns to his form of a teenage boy. But can he confront the king, regain his memories, and take his place once again in the magical world? Time-travel may be necessary.