After Siloé and her half-brothers unexpectedly entered the Hexaworld,
Nola learned a lot about her mother and the history of Pandorient. But
the unanswered questions multiply when she discovers a strange key at
home. What could it possibly open? To find out, Nola returns to
Pandorient, only to learn of a disturbing disappearance. Are Nola, Igor,
and Andrea ready for an investigation that could turn life in Pandorient
upside down? Will the secrets behind the strange key open a door to
adventure or disaster? Find out in the fourth volume of this enchanting
graphic novel series that will leave fantasy fans spellbound.