“You’re mine Clary, don’t you get it by now?" Sebastian yelled, his rage boiling over like an erupting volcano. "Screw Jace – not like you need encouragement – just give in and accept that we’re meant for each other! Forget about Jace!” Clary screamed as she felt her rune activate, and memories in the back of her mind were burned away. Memories of a boy with bright golden eyes.

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.