Cassandra Liddell, an FBI agent and half-fairy, finds herself at the center of chaos when dark fairies attack London. Her friend is kidnapped, and she becomes the target of a twisted game set by a master of mirrored magic. Cassandra is forced to flee from the dark fairies and the secret services to save her friend and prevent a citywide fire. At the same time, rage simmers inside her, ready to burst out through magic.