Colorado Bureau of Investigation Agent Buck Taylor and his team are called to the idyllic South Park valley in Park County, Colorado to investigate the death of a state brand inspector who was discovered surrounded by dozens of dead cattle. The death of the brand inspector is clearly murder, but there is no apparent cause of death for the cattle. Complicating their investigation is a local family that has been running a criminal enterprise and intimidating the residents of Park County for years. Now, faced with more scrutiny, the family must wrap up several crimes they are involved with including baby farming and human trafficking, but could they also be involved in terrorism? The federal government has determined that the cows were killed by one of the deadliest toxins known to man. It's up to Buck and his team to determine how all these crimes are related and stop those responsible before more people die.
