Mortimer Brewster, a newspaper drama critic, playwright and author known for his diatribes against marriage, suddenly falls in love and gets married; but when he makes a quick trip home to tell his two maiden aunts, he finds out his aunts' hobby - killing lonely old men and burying them in the cellar!

An angel is sent from Heaven to help a desperately frustrated businessman by showing him what life would have been like if he had never existed.

Follows the lives of eight very different couples in dealing with their love lives in various loosely interrelated tales all set during a frantic month before Christmas in London, England.

In Nazareth, teenager Mary is betrothed to the local carpenter, Joseph. Mary is visited by an angel and told that she will fulfill a prophecy and as a virgin give birth to God's son, the savior of the world. Mary's pregnancy brings her the scorn of the community and Joseph struggles to believe her seemingly outlandish story. Meanwhile, a census forces every man and his family to return to his place of birth. Joseph and Mary set out on a long and arduous journey to Bethlehem. This story is based on the Biblical account of the birth of Jesus Christ.

During WWI Bill Pettigrew, a naive young Texan soldier is sent to New York for basic training. He meets worldly wise actress Daisy Heath when her car nearly runs him over. Daisy agrees to pretend to be Bill's girl to impress his friends, but then a real romance begins.

It's been a year since Bill Cardew was declared dead by drowning, and his widow Vicky is now married to his old friend and business partner, Henry Lowndes. When Bill unexpectedly returns from the island where he was marooned, what is Vicky to do? Well, having twice been a rather neglected wife, Vicky finds all the attention from two husbands competing for her favors delightful, and is in no hurry to make a decision...much to the discomfiture of hapless Bill and Henry.

A successful song-and-dance team become romantically involved with a sister act and team up to save the failing Vermont inn of their former commanding general.