Hilary Clarke (Rosamund John) is a young architect who accompanies her office boy to hospital when he is injured. After witnessing the work of the nurses, she decides to join the hospital and train as a nurse herself. Despite the long hours, Hilary is happy with her new vocation. Then Larry Faines (Stewart Granger) and his fiancee are brought in having been injured. He and Hilary become increasingly attracted to each other, but she must also care for his fiancee who gradually becomes aware of the situation.