Clary's POV

 'Ok, Sebastian's army has invaded Berlin's and Rio De Janeiro's institute.' Maryse Lightwood said. The shadowhunters of the New York institute are discussing battle plans, Maryse obviously taking the lead. I set in one of the couches of the library, hearing the battle plans. I sighed, thinking of what Sebastian is doing now. Erochmai,' I am Coming', it stated. He is obviously coming for Jace and I.

"Hey! Clary" Jace whispered to me. 'Hmm?' I responded back. 'You have to see this, I've already rounded Izzy and Alec.' Jace whisper-shouted. I heaved myself off the couch and followed him. He has a dangerous glint in his eyes. Uh-oh, that is not a good sign. Izzy, Alec and I met up in the basement of the Institute. "Ok, i have founded this device, it has time machine printed at the side. Maybe we can go back in time and stop this battle." Jace pleaded with us. All of us agreed to this seemingly good idea. 'So? How do we activate it?' Alec asked. I stepped up, ' maybe i can use an activation rune.' 

I drew the activation rune with my stele and stepped back. The device started glowing brightly. " Alec, are you in here?" Just then, a familiar voice floated into the room.' No, no ! Magnus, don't step into the room!' Alec cried out before we were all swept into the darkness.