Their magic tree house takes Jack and Annie back to retrieve a lost story in ancient Greece, where they witness the original Olympic games and are surprised to find what girls of the time were not allowed to do.

The Four Sisters, evil creations of the Shadow Lord, are poisoning Deltora and starving its people. Lief, Barda, and Jasmine have found and destroyed the first of the Sisters. Now they must find the second, hidden within the mountains that border the Shadowlands. And they know that only the Dragon of the Emerald can help them. The Shadow Lord is now aware of their quest. Deep in the Shadowlands, he plots their destruction. Hidden enemies and trickery...