Set in Africa right at the beginning of WWI, this story follows salty steamboat captain Charlie (Humphrey Bogart) and prim missionary Rose (Katherine Hepburn). They are thrown together when German officers destroy the village that Rose and her brother were witnessing to (as well as causing the brothers death). Charlie agrees to take Rose down the river to safety, but she has another plan: somehow get down the Ulanga River and destroy a large German ship that is anchored there. Their journey down the river is at times humourous, touching and exciting as they struggle to survive the elements and eachother.
Shot on location, this film captures Hepburn and Bogart at their best.