Magic Tree House
Junie B. Jones
Akiko's back! No longer simply a shy fourth-grade girl, she's become an intergalactic leader, taking her band of would-be heroes on a quest to find a kidnapped prince!
Armed with a map showing the way to Alia Rellapor's castle, Akiko, Mr. Beeba, Spuckler, Gax, and Poog are nearing the end of their mission. But first they have to scale the Great Wall of Trudd. Like the Great Wall of China only bigger, the Great Wall of Trudd stretches across the landscape -- there's no way around it, under it, or through it. So Akiko and the gang will just have to find a way to go over it!
But the Great Wall is just one of the many strange obstacles in their path that Akiko must overcome if she's finally to rescue Prince Froptoppit.