丹尼尔的幼子在新家离奇死亡后，，他开始听见诡异的的，求救声，只得求助一位一位知名的灵异专家。Daniel, Sara and their only son Eric are a happy family that move to an old house in the country. Working as home restaurateurs, Daniel and Sara plans for restoring and sale the house after the job be done change drastically when the own Eric is found dead in the pool close to the house. Broken by the pain, Sara moves to her parents for a days after a strong discussion with him, while Daniel keeps alone in the house. However, at the next night Daniel tapes Eric's voice in his cell phone when he was sending an audio message to apologize Sara. Looking for answers, Daniel meets Germán Redondo, a veteran and renowned writer and supernatural investigator specialized in electronic voice phenomena. Traveling to the house with his daughter Ruth, Germán analyzes Daniel's audio message, installing infrared cameras hoping to find any kind of ghostly activity, while at the same time Ruth tries get closer to her father, still affected by the suicide of his wife (Ruth's mother) happened years ago. ...