What would you do if your beloved girlfriend suddenly became your worst enemy? That dilemma's all too real for Syl Skye, the last princess of the fair Fae. Even though Syl is all things sun and Summer, she's drawn to her polar opposite, Rouen Rivoche, the dark Fae princess-assassin of the Winter Court. They should be mortal enemies, but they're best friends. Girlfriends. In love. That is, until Roue falls under a dark spell that makes her forget all about Syl, their lives and their love. Now Roue rules Dark Faerie as a cruel and cold Queen. A Circuit Fae who can harness the killing magic in technology, she wants nothing more than to destroy Syl and her fair Fae people. But when an old enemy brings both Faerie realms to the brink of destruction, only their queens, Syl and Rouen, can save the day-and only if they can put their differences aside for two seconds and team up. With the clock's ticking on Syl and Roue's relationship-not to mention all of Faerie-will Rouen remember the love she and Syl once shared, or is she destined to be Syl's nemesis forever?