A group of paranormal investigators decide to investigate Clophill, the ruins of a church that are said to be haunted. There are stories of black masses, ghostly sightings, and mysterious things happening in the churchyard.
This is essentially like watching a really boring episode of Ghost Hunters. The investigators interview townsfolk and nothing much happens during the investigation.
The description says based on true events, but there is also information provided that 90% of the movie is real with the remainder being staged. Based on the credits, everyone is listed as themselves except for those listed as cult members.