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!

Queen Clarion is missing! One minute Prilla was flying right behind her, then POOF!-the queen was gone. Meanwhile, someone has taken the precious heart seed from Lily's rare Fairy Pink rose. Could the queen's disappearance and the stolen heart seed be connected? With the help of Lily and Beck, Prilla follows clues that Queen Clarion has left behind. The trail leads them all the way to the mysterious High Tree Forest. Prilla knows the queen is somewhere in the vast, dark forest. But how will they ever find her?

Beck can't help wondering what lies outside Pixie Hollow. Then Beck meets a flock of Explorer Birds and has her chance. With Vidia's special pixie dust, Beck can join the far-flying birds and see what's beyond the sea. But why would selfish Vidia help Beck? Is it possible she just wants Beck to leave Pixie Hollow...for good?