Two men are trapped in an isolated lighthouse in the deadly Irish Sea, cut off from the outside world. As a freak storm rages for months and getting help seems impossible, a terrible tragedy hits, leaving them fighting to stay sane in a nightmarish situation. The Lighthouse follows Thomas Howell and Thomas Griffith's disastrous posting to Smalls Island Lighthouse to 'keep the light' 25 miles from land and surrounded by the deadly Irish Sea. The men are stranded in a freak storm that rages for months, nothing short of an act of God. The film tells a tale of death, madness and isolation; a desolate trip into the heart of human darkness.