Coming of age film about Sven, a boy who feels trapped in his own family which only consists of duos

　　一對年輕夫婦經常拍攝、上傳自己探險水下房屋的視頻。這次二人前往一個偏遠的湖泊，意外發現了深水中一幢奇怪的廢棄房屋，而他們的到來喚醒了深宅中的黑暗存在。