The second volume (the missing princess) focuses on one of the tribes, water dragons and our five young heroes explore the dragons and discover all the secrets. I imagine that the discovery will continue with the next three volumes announced for 2016. Besides the first chapter of Volume Volume 3 at the end of the missing princess is attractive and makes the mouth water for my son who is very impatient to discover the rest! A superb saga of adventure and fantasy to discover without hesitation from 9 years.