The race is on to find the sleep thorn, a magical weapon that can put anyone in an eternal sleep. Alex wants it to eradicate her enemy—her enemy wants it for the same reason. When the new guy at the Circle promises to help Alex find the weapon, and a prophetic dreamer discovers its exact location, it seems like a done deal. But in the dream world, things are rarely what they seem, and on Alex's journey, betrayals and nightmares lurk in every corner.