一对年轻夫妇经常拍摄、上传自己探险水下房屋的视频。这次二人前往一个偏远的湖泊,意外发现了深水中一幢奇怪的废弃房屋,而他们的到来唤醒了深宅中的黑暗存在。A young and modern couple who go to France to explore an underwater house and share their findings on social media undergoes a serious change of plans when the couple enter the interior of a strange house located at the bottom of the sea and their presence awakens a spirit dark that haunts the house.