K2 O'Hero is a seemingly ordinary boy - after all, he and his twin sister Izzabird have been sworn to keep their family's magical history a secret. Not even their stepsiblings, Theo and Mable, know that magic exists. They believe K2 to be the most hopeless person they have ever known. But K2 has a secret gift: he draws maps of worlds that are beyond the wildest of imaginations. But what K2 doesn't know, is that the maps he draws are real... From the bestselling author of 'How to Train Your Dragon'.