Après des mensonges, une longue absence, une séparation et d'autres obstacles, Aby décide de vivre pleinement sa vie et de suivre son coeur. Mais est-ce que l'amour peut vraiment suffire ?

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.