China Sky: During World War II, an American mission hospital is headed up by Dr. Gray Thompson and Dr. Sara Durand. Sara is secretly in love with Gray but hides her feelings as his new wife, Louise, arrives at the hospital. Sparks fly, however, when Louise becomes jealous of Sara, and then tries to convince her husband to leave war-torn China behind for a calmer life in the United States. But Thompson is attached to both Sara and the people who need his help.