The story is adapted from Tom Clancy (Tom Clancy) 's novel of the same name. Special Forces John, who retired from the Vietnam War, met a girlfriend. However, it was not long before the latter was humiliated to death by drug cartels. John decided to avenge his girlfriend with his special forces skills. At the same time, senior officials in Washington are working on a secret plan to rescue some senior US military officers in Vietnamese prisoner-of-war camps, and the Pentagon has asked John to return to Vietnam to help complete the plan. How can John do his job while completing his revenge mission?