In the years following World War I, Tom Sherbourne (Michael Fassbender), a young veteran still numb from his years in combat, takes a job as lighthouse keeper on Janus Rock, a remote island off the coast of Western Australia. As the island's sole inhabitant, he finds comfort in the monotony of the chores and the solitude of his surroundings. When he meets the daughter of the school's headmaster, Isabel Graysmark (Alicia Vikander), in the local town...