The film recounts the harrowing true story of the most lethal shootout involving law enforcement in U.S. history. On January 2, 1932, just outside Springfield, Missouri, ten police officers and one civilian set out to apprehend two brothers accused of murder. The Sheriff, who had been neighbors with the brothers’ family, anticipated no resistance. However, the situation escalated tragically, resulting in nine of the eleven being shot and six losing their lives. This incident remains the deadliest shootout for law enforcement officers to this day.