From the bestselling author of How to Train Your Dragon comes an epic new series that will transport you into another world … K2 O’Hero is a seemingly ordinary boy from a truly extraordinary family – he and his twin sister Izzabird have been sworn to keep their family’s history of magical explorers a secret. Not even their infuriating stepsiblings, Theo and Mable, know magic exists. They believe K2 to be the most hopeless person they have ever known.