Sebastian catches Jace playing the piano. Jace says he's moved on from Clary and simply having fun with Maia.
Alec, as the new head of the New York Institute, plans to have the Downworlders visit the Institute regularly to repair bridges. He also plans to send Jace and Clary to the Seelie court to meet the Seelie Queen.
Luke is the only holdout from joining the new group. His demand is to either destroy the Soul Sword or for Valentine to die.
Simon accompanies Simon and Clary to the Seelie realm.
Alec asks Magnus to attend the council only as a warlock representative, not as his boyfriend. His mother arrives and reveals that her marriage is over, but she isn't seeking a divorce yet.
Izzy is feeling anxious with her mother in town. Her mom doesn't know about the yin fen addiction.
A mysterious person calls Luke and offers him the chance to kill Valentine. As he's about to ask for more, his partner Holly arrives and presses him for more information. He lies about his plans.
The Seelie Queen is a little girl. The queen requests to see their angel powers, but they refuse as they're still learning. She reveals that she killed Kayleigh's accomplice.
The Clave isn't willing to kill Valentine just yet. Luke is furious and demands that he be killed. When it doesn't look that way, he accepts the offer from the mysterious stranger on the phone.
The Seelie Queen offers Simon a new partnership. She wants to work together and protect the survival of the Downworlders; she doesn't trust the Shadowhunters.
Raphael confronts Sebastian about his interest in Isabelle. The two come to a head and Sebastian urges the vampire to leave her alone as they're still addicted to each other.
As the group plans to leave the court, deadly vines grab onto Simon and Jace. The Seelie Queen demands that Clary kiss the one "her heart most desires" to stop the vines from killing them. She kisses Simon, but it doesn't work. She then kisses Jace and the vines go away. Simon leaves the group in heartbreak.
Isabelle's mother comes clean about leaving her husband. Isabelle admits that she always knew. She comes clean about her addiction to yin fen.
Luke tries to kill Valentine, but he's stopped by the Shadowhunters. Alec pardons Luke and vows to find the mole in the Institute.
Isabelle wants to make things work with Raphael, but he turns her down.
Simon refuses to open the door when Clary comes to see him. He starts practice music to drown out her knocking at the door.
Holly has a photo of a wolf on her phone.
It's revealed Sebastian is the one who called Luke. He's also holding someone hostage in his apartment.