At the end of the Vietnam War, a group of Rangers led by Santos (Chick Vennera) risk their lives to rescue POW Robert McBain (Christopher Walken). Santos hands McBain half of a $100 bill, telling him to pay him back when the other half shows up someday. Eighteen years later, Santos is killed while leading a campaign against drug lords and corrupt politicians in Colombia. When his sister, Cristina (Maria Conchita Alonso) seeks McBain out with the other half of that $100 bill, he must assemble a group of surviving Rangers to take down the cartels and avenge Santos’ death.