Riley can't wait to see her sister Hattie get initiated into a powerful lineage of Korean healing witches their family has belonged to for generations. Although Riley is desperate to follow in Hattie's footsteps, she's a saram--without magic. Then Hattie gets an idea: what if the two of them could cast a spell that would allow them to share Hattie's magic? But when the sisters attempt to violate the laws of the Godrealm, it puts Hattie's life in danger, and to save her Riley has to fulfil an impossible task: find the last fallen star. The quest she embarks upon uncovers secrets, and changes her view of the world.