This is a story about four Vietnam Veterans who though they have long since left the arm remain close friends. During their army training they made a pact to support each other for life, promising to come to the aid of each should their lives or those of their families ever be in danger. Many years later one of their number asks the other three to honour that pact when his life is threatened and his family kidnapped by a crooked lawyer and his underworld associates. When in the army the four had been trained as an elite Special Forces unit. In reuniting again to aid one of their number they will call on many of the skills learnt during their army training. Thrown in the mix is a dedicated police inspector, who although a Vietnam Veteran himself will not hesitate to pursue and arrest anyone who breaks the law, no matter what their background or justification.