Searching for the meaning of a person's life can lead to more than someone bargains for as it does for Liam Morrison, a high school English teacher, who travels to the Scottish Isle of Lewis to research his family tree. While there, he is rescued by a selkie named Seonaid who presents him with a magical amulet that causes him to shape-shift unexpectedly. During a layover on his return home and while he is transformed into a dog, he overhears a plot to assassinate the President. This sends Liam on a journey to both stop the assassination and grapple with the power of the amulet and, with it, discover his destiny.