s of Ember City graphic novel chapter book series, the three dragon pals uncover the culprit behind disruptive nighttime noise! Ember City is being plagued by loud growls in the night. Drake, Li, and Runa's search for the source of the noise leads them to a mountainside cave. What they find inside isn't a vicious beast but a great snoring cave dragon! Can the dragon friends solve the snore so the dragons of Ember City can finally get some sleep?