Sergeant-Major Zack Carey is completing his final stint of duty at a post in a small southern town. After defending a prostitute, he finds himself doing battle with the town's sheriff. When Zack's son Billy is jailed on a phony drug charge, the Sergeant takes justice into his own hands with help from his personal World War II Sherman Tank.

Sergeant-Major Zack Carey is completing his final stint of duty at a post in a small southern town. After defending a prostitute, he finds himself doing battle with the town's sheriff. When Zack's son Billy is jailed on a phoney drug charge, the Sergeant takes justice into his own hands with help from his personal World War II Sherman Tank.

A United States Army officer/trained assassin is sent into the depths of a southeast Asian jungle to seek out a renegade colonel and terminate his command during the Vietnam War.