Aimless ex-soldier Homer Smith (Sidney Poitier) is on his way to California when his car overheats in the desert. He stops to get some water at an isolated farm and soon finds himself building a chapel for the nuns who live there. The stern mother superior (Lilia Skala) is certain God has sent Smith for just that purpose, and all of Smith's words to the contrary fall on deaf ears in this Oscar-winning film from director Ralph Nelson.