Maria is a failure as a nun. The Mother Superior sends her off in answer to a letter from a retired naval captain for a governess for his seven children. She goes to their house and finds that she is the latest in a long line of governesses run off by the children. Maria teaches the children to sing, and through her, music is brought back into the hearts and home of the Von Trapp family. Unknowingly, Maria and Captain Von Trapp are falling helplessly in love, except there are two problems, the Captain is engaged, and Maria is a postulant!