If I Could Go is a sweeping, contemporary reimagining of the Irish myth of Tír na nÓg — a tragic story in which Oisín, an Irish warrior, finds the love of his life in Princess Niamh, a goddess from a timeless "otherworld". In the original myth, Oisín traverses the crossing between their worlds to live with Niamh in this mythical Land of Youth. But a few years later when he misses home and returns to the mortal world, he finds that centuries have passed, and he ages instantly and crumbles to dust the moment his feet touch the ground.