Hangmen is a thrilling story about Rob Greene, who possesses crucial information about an undercover terror team within the CIA led by Joe Connelly.
To protect himself, Greene is advised by his supervisor Andrews to remain undercover.
Connelly's men attempt to eliminate Greene, but he manages to escape and warns his son Danny about the danger they both face.
Greene instructs Danny to seek out Dog Thompson, an old military friend, for help.
Together with Thompson and Bone Conn, another ex-soldier, Danny tries to evade Connelly's henchmen.
Meanwhile, Connelly targets Danny's friend Lisa as a means to lure Danny and his father into his trap.