Starfell #3: Willow Moss and the Vanished Kingdom (9780008308483)

For the very first time, magical children like Willow are allowed to go to school alongside their non-magical neighbours. But Willow is suspicious. She knows the Brothers of Wol are up to no good, so why are they changing the rules all of a sudden?

On her first day, Willow meets an elf girl named Twist, and soon they are embarking on Willow's most urgent mission yet: to protect the children of Starfell, uncover the mystery of a long-lost kingdom – and prevent the very source of magic from getting into the wrong hands .