Christmas Book - What's Christmas without a tree

Mia and Doug have decorated their tree perfectly. The tinsel, the ornaments, and the star are on there just how they like. There's a problem, though. While the decorations look amazing, the tree has lost all its needles. Mia and Doug are crushed. What's Christmas without a tree?

This brother and sister have excellent teamwork, though. They're determined to make sure they have a tree for Christmas. What can they decorate to replace their tree?