Fifty years ago a girl disappeared from her home in Norway. She ran after a lamb and found herself travelling right across Europe to Palestine, and back through 2000 years to meet the Holy Family in Bethlehem. There she met angels, shepherds, wise men and other biblical characters who joined her on her pilgrimage; and she heard of many of the things that happened in the world in the last 2000 years.

In present-day Norway, a boy acquires a strange old Advent calendar. Hidden in each of the windows is a tiny piece of paper. Little by little these pieces unfold the girl's story and as we learn what happened to her, another story is revealed - that of the strange old man who made the calender.