What would happen if Clary goes back in time to the London institute only to find the New York Institute's long lost family? With the threat of Sebastian still out there what will her family do? All of the characters and the shadow world belong to the amazing Cassandra Clare.

The Shadowhunters of London get sent into the future. There they meet Magnus, but a more sparkled version, and the modernized Tessa...she happens to be, well different from the Tessa they knew. They also meet The Shadowhunters from New York. As they struggle to get back to their time they discover many things.