Feyre returns to the Spring Court on a reconaissance mission about the invading king. As a spy, the future of the entire kingdom may rely on her ability to play her part perfectly, and her decisions about who to trust and which allies are best will decide the outcome of the coming war.

As a world-ending war surges to life around them, Todd and Viola face monstrous decisions, questioning all they have ever known as they try to step back from the darkness and find the best way to achieve peace.

June and Day make their way to Las Vegas where they join the rebel Patriot group and become involved in an assassination plot against the Elector in hopes of saving the Republic.