The magic tree house takes Jack and Annie back two thousand years to ancient China where they must find the original copy of an old legend before the Imperial Library is burned down by the evil Dragon King.
Lief, Barda, and Jasmine have successfully destroyed three of the Four Sisters, evil Shadow Lord creations that are poisoning their land. Now they must head to the city of Del where Sister of the South lies hidden.
Jack and Annie travel in their Magic Tree House back to a Hawaiian island of long ago where they make friends, learn how to surf, and encounter a tsunami.