Winter of the Ice Wizard by Mary Pope Osborne

Sent to the Land-Behind-the-Clouds, Jack and Annie must rescue Merlin and Morgan from the icy clutches of the mysterious Ice Wizard. Alongside magical companions, they brave snowstorms, treacherous paths, and a frozen castle to complete their mission. Along the way, they uncover the wizard’s tragic past and help him rediscover warmth and love. The plot blends wintry danger with a redemptive tale of forgiveness. It’s a fantasy journey with heart, bravery, and magical twists.