The Archangel Gabriel appears to Mary and tells her that she shall be the mother of Jesus, the son of God. She and her husband Joseph travel to Bethlehem, where Jesus is born.
After leaving a wealthy Belgian family to become a nun, Sister Luke struggles with her devotion to her vows during crisis, disappointment, and World War II.
Alvy Singer, a divorced Jewish comedian, reflects on his relationship with ex-lover Annie Hall, an aspiring nightclub singer, which ended abruptly just like his previous marriages.