The "Magnus Chase and the Gods of Asgard" book set by Rick Riordan includes three hardcover books that are part of a gripping fiction narrative, featuring Norse mythology and gods. The intended audience for this series is young adults, ages 9-12, and adults. With the author's engaging storytelling and the publisher's quality, this set is sure to captivate readers with its adventure and intrigue. Dive into the world of Asgard and follow Magnus Chase on his quest through the gods and monsters of Norse legend.