Fifty years ago a girl called Elisabet Hansen 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. As she ran 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 called Joachim acquires a strange old Advent calendar. Hidden in each of the windows is a tiny piece of paper unfolding Elisabet’s story. And it is because of Joachim that we learn what happened to Elisabet and that she returns to Norway at last.