The African Queen (1951) on Netflix

1914 in German East Africa. Brother and sister, Reverend Samuel and Miss Rose Sayer, are British Christian missionaries. They are reliant upon Canadian Charlie Allnut, who owns and operates a run-down river boat called the African Queen, for mail and supplies, Charlie who works as a mechanic at a mine one day away along the river. The Sayers merely tolerate Charlie, who they consider a little too rough around the edges for their proper British and Christian sensibilities. They consider his heavy drinking especially problematic. The Sayers only hear about the war raging in Europe from Charlie, not experiencing any of it until the Germans later raid their village, the Germans believing it the best way to control the natives and co-opt them into military service. Reverend Sayer passes away from the shock experienced by watching what the Germans did. As such, Charlie has to help Rose escape from the ravaged missionary compound before the Germans return. They not only have to beware the Germans, who Charlie knows they have to pass along the only route along the river, but deal with dangers of the river, such as the rapids, and their own differences, especially being in such tight quarters on a 30 foot boat. Those differences are heightened when Charlie would rather wait their time out somewhere secluded along the river, while Rose suggests they torpedo a German gunboat along the way. But all these issues in combination make for strange bedfellows, the two who are dependent upon each other for both their physical and emotional well being.