Braddock, a man who was a POW in Vietnam, who just recently came back, is asked by an American delegation to go to Vietnam to see if there are any POW's there. When he arrives the General in charge makes some disparaging remarks to Braddock and they accuse him of crimes against them. Braddock later goes to the General and demands to know where the POW's are and after telling Braddock he tries to kill him but Braddock kills him. Later he is asked to leave, he then goes to Thailand to see a friend and to try and get those men out. But he is being pursued by a man who tortured him when he was a prisoner.

Chuck Norris is the mainactor in "Missing in Action". Van Damme is not visible in this movie, but did he did some stunts.
On the photo you see Van Damme with Chuck Norris.