QUINN VASQUEZ and CASSANDRA DIAZ are mirror images of each other. Cassandra is notorious for her reign of terror beyond the city’s bounds, from mass attacks to straight-up murder, and Quinn has had her fair share of trouble for simply resembling her. Quinn tries to disassociate herself from Cassandra by changing her appearance and striving to live normally at St. John’s Academy. However, after Cassandra kills someone at a party filled with Quinn’s schoolmates, the line between them begins to blur.

While St. John’s is determined to solve the mystery, Quinn initiates a silent battle against her evil twin. As characters of the Author’s Metropolis, Cassandra is trying to reclaim her spot in the story, a position that Quinn currently holds. Because she was scrapped and forgotten, her anger and frustration culminate into one grand plan: to destroy the Author’s precious work, to erase the Metropolis forever. Quinn then asks herself: Can Cassandra really do that?

But as their origins slowly come to light, Quinn realizes that Cassandra has the upper hand, and she’s determined to keep the Metropolis alive no matter what it takes.