In 1988, evil begins to terrorize young sisters Katie and Kristi for the first time when an invisible entity resides in their home.

Just as Dan and Kristi welcome a newborn baby into their home, a demonic presence begins terrorizing them, tearing apart their perfect world and turning it into an inescapable nightmare. Security cameras capture the torment, making every minute horrifyingly real.

Desperate to be free from her drunken, unloving mother Diane, the beautiful, scheming young Mini seduces her stepfather Martin and soon convinces him to join her in a sadistic scheme to have Diane declared insane. But their conspiracy soon escalates to murder and when John Garson, a young detective starts investigating, Martin and Mini begin to turn on each other.