Petra Brightshade gets captured and then wakes up on a circus train in a car with some elephants, with a dampener on her wrist that keeps her from using her primal magic. It's not exactly her favorite day ever. When she finds out she's been captured because her blood is the only thing that can reopen the breaches she just closed, she knows she's got to escape, find the others, and figure out some way to stop her captors once and for all. No way is she reopening the breaches. No effing way.