Wintersolstice -- Land-behind-the-clouds -- Ice wizard -- Take my sleigh -- Norns -- In the hollow hill -- Frost giant -- Return of the eve -- Wisdom of the heart.
Summary
Jack and Annie, joined by Teddy and Kathleen (from earlier books), travel in the Magic Tree House to a land of snow where the Ice Wizard has captured Morgan and Merlin. The four friends must find the Ice Wizard's missing eye - or is it really his heart that is missing? Jack and Annie are joined by Teddy and Kathleen as they travel to the snowy Land-Behind-the-Clouds, where they search for the eye of the Ice Wizard and attempt to help Merlin and Morgan.