Ulrike's Christmas

Ulrike knows all about the Winter Solstice celebrations of the giants, being one himself. But what he doesn't know is why the humans cut down whole trees, only to take them home to decorate. Other giants tell him to forget about it, but Ulrike is curious; he needs to know why they do it. Finally, when he's puzzled over it so much his head is sore from all the thinking, he decides that this is the year he'll figure it out, and risks a return trip to the home of the last family he watched to ...