Fourteen-year-old Thea Heffield's older brother Danny has run away, leaving a note that says: "I know everything, I am going to fix this." It's up to her to find him. Armed with a peculiar spyglass that lets her see beyond the ordinary, she journeys to Euphoria, a world filled with bizarre creatures, magical clothes and objects, and enchanters. Aided by warrior Sylvia Silver, Thea will search for Danny and learn startling truths about Euphoria, her family, and herself.