A young priest, Father Chisholm is sent to China to establish a Catholic parish among the non-Christian Chinese. While his boyhood friend, also a priest, flourishes in his calling as a priest in a more Christian area of the world, Father Chisholm struggles. He encounters hostility, isolation, disease, poverty and a variety of set backs which humble him, but make him more determined than ever to succeed.
The Keys of the Kingdom is a 1944 American film based on the 1941 novel The Keys of the Kingdom by A. J. Cronin. The film was adapted by Nunnally Johnson, directed by John M. Stahl, and produced by Joseph L. Mankiewicz. It stars Gregory Peck, Thomas Mitchell, and Vincent Price, and tells the story of the trials and tribulations of a Roman Catholic priest who goes to China to evangelise.