Season of the Sandstorms by Mary Pope Osborne

The siblings journey to ancient Baghdad, tasked with delivering a secret message to save an important library. As they cross a desert on camels, they encounter sandstorms, bandits, and a magical cloud camel. Along the way, they learn the importance of stories, wisdom, and the preservation of knowledge. The plot highlights teamwork and cultural heritage in the face of danger. It’s a desert adventure rooted in magic and history.