Missionary lot get Rambo, who happens to be living in the next door country, to boat them into the warzone.
Missionary lot get captured by the bad guys
Rambo rescues them - and kills a few hundred of em of course.
Errr thats about it really.
The storyline is not exactly hard on the brain cells. Then again, that is about par the course for just about all of his films. I saw it last week and it was not bad I suppose. I cannot imagine it will win the oscar for best original screenplay somehow.