Evvy, the fierce young stone mage introduced in Street Magic, has accompanied her guardian, Rosethorn, on a mission to study a mysterious plant die-off. With the help of Luvo, who is the living heart of a mountain, Evvy discovers the real source of the threat, which is far greater than anyone had imagined. Preventing a natural disaster may cost Evvy her life.

For years, the Empress of Namorn has pressed her young cousin, Lady Sandrilene fa Toren, to visit her vast lands within the Empire's borders. Sandry has avoided the invitation for as long as it was possible. Now, Sandry has agreed to pay that overdue visit. Sandry's uncle promises guards to accompany her. But they're hardly a group of warriors! They're her old friends from Winding Circle: Daja, Tris, and Briar. Sandry hardly knows them now. They've grown up and grown apart.

Briar and Rosethorn are in ancient Chammur, where Briar gets involved in a war between street gangs at the same time that he ends up trying to train a young stone mage he has discovered. Intrigue, adventure, humor, nastiness, all set against a fascinating culture, this is classic Tamora Pierce.

Sandrilene fa Toren has moved to the palace of her uncle, Duke Vedris, to care for him after his recent heart attack. While the two are out riding Sandry sees a boy named Pasco dance a magic spell. To her dismay she soon learns that since she discovered Pasco, she must handle his magical education until a proper teacher can be found. At 14, Sandry feels she is too young for this. Even worse, 12-year-old Pasco refuses to believe he even has magic. But Sandry has greater worries than Pasco....

Briar Moss and his fellow mages-in-training Sandry, Tris, and Daja, have faced earthquakes, pirates, and fire. But their greatest challenge is still ahead. It comes in the unexpected form of a disease, a devastating plague that is ravaging the citizens of Emelan.