Set in Thailand,
Rambo revolves around a group of Christian aid workers
who recruit Rambo to guide them up the Salween River to
deliver medical supplies to the Karen tribe of neighboring Burma (a.k.a. Myanmar).
When the missionaries fail to return,
Rambo is persuaded to take a group of mercenaries
back into the war-torn border region to find them.
What follows is a descent into hell on earth.
