A group of teens's worlds collide in the ultimate New York City high-rise in 2118. Mariel is determined to avenge her girlfriend Eris's death. Leda uses the secrets she holds to manipulate others--especially Watt. Avery tries to hide her own secrets as she fears Atlas will judge her if he knows the truth. Rylin must face Chord after they both broke one another's hearts. And everything becomes more complicated when a con artist going by the name Calliope enters the scene.