Tessa is knew to Infernal High (as the students have nicknamed it), Will doesn't want anything to do with the new girl, Jem can't take his eyes off her and Cecily wants only to be friends. Meanwhile, Clary can't take her eyes off Jace who is busy dodging detentions and suspensions whilst Simon is trying to fit in for once and Izzy wants a group of friends who won't blackmail her.