Rani and the Three Treasures is a chapter book released in 2007. This book was later reprint in Rani Two Friendship Tale, in 2010 along Rani in the Mermaid Lagoon.
A water sprite named Dab has tricked Rani into looking after a whole flock of rain clouds! Dab won’t take the clouds back unless Rani answers a riddle about Pixie Hollow’s three greatest treasures. But Rani doesn’t know what those treasures might be—and meanwhile, Pixie Hollow is getting very damp!