With the hopes of a new life for his family, Bruce Diaz left the harsh city for the serene and majestic mountains of California. The Diaz family's first day in their new house would go down as one of the most violent 24 hours any family has ever experienced. With no real evidence retrieved and no witnesses found, the case was eventually dismissed. Several years later, the family's personal home movie footage was released by an anonymous source. 'The Purging Hour' recounts the family's horrific experience through the footage they left behind.