What could be better than a summer vacation on a hot air balloon? Zac and his dad are about to find out! Zac knows magical creatures don't really exist... but dad promises an adventure full of magic, dragons and pixies. Will Zac change his mind when he discovers a talking cat, trapped inside a goblin's cave? Lending a helping hand is the obvious choice. But how did this mysterious new friend end up there in the first place? And will Zac succeed in his rescue mission? Goblins don't give up easily. A perfect action-adventure chapter book for fantasy lovers!