The film centers on US Marine "Allison" (Robert Mitchum), who finds himself stranded on a secluded Pacific island after his plane goes down. He's fortunate to reach land safely and discovers what appears to be an empty village, where he unexpectedly meets its only inhabitant: a nun, “Sister Angela” (Deborah Kerr). Both are taken aback by the encounter, but they quickly begin collaborating as an improbable pair. Following an overflight by Japanese forces, they leave their coastal home and seek shelter in a hidden cave, reminiscent of "Robinson Crusoe." The ensuing events involve a tense game of hide-and-seek with the invading soldiers, while she maintains her distinctive white habit. While the narrative follows a fairly foreseeable course and its ending is somewhat predictable, the journey offers a well-crafted and heartfelt production that highlights both performers at their most captivating. Beginning from vastly different perspectives on attitude, faith, and how to live, we witness a progression that doesn't shy away from challenging each character’s initial views on life and love; they seem to playfully react to one another amidst the insects, wild pigs, and threatening Japanese soldiers. Mitchum is charming and complements Kerr, whose portrayal of her religious beliefs feels less rigid than in “Black Narcissus,” which she made a decade prior. It's impressive that they manage to sustain the story on their own for nearly two hours, and its wartime theme is balanced by a realistic sense of compassion. I would recommend seeing it.

Source on TMDB