The Sandman and the war of dreams

When Pitch and Katherine go missing, the Man in the Moon recruits the sleepy but clever Sandman to aid the Guardians' cause in an adventure that finds them struggling to convince their new member to accept a more optimistic perspective. The newest Guardian, Sanderson Mansnoozie, better known as the Sandman, must help stop Mother Nature and Pitch, or Katherine will be trapped in a world of nightmares forever. Book #4