Aria is back on the outside, and this time she's on a mission to find the Still Blue. She rejoins with Perry after months of being apart, but unfortunately the Tides won't accept her as one of their own. She leaves with Roar for the Horns' land, in search of information about the Still Blue and in hoes of rescuing Liv. Perry stays back with the Tides and tried to balance his duties as Blood Lord and his heart. With the Aether becoming more and more dangerous, will the star-crossed lovers be reunited in time, or will the elements get to them first?
In a protected city known as Reverie, Aria is an ordinary girl who spends her time with her friends travelling in and out of realms, without ever leaving the comfort of her room. One day, she and her friends decide to physically explore a part of the dome that has been damaged by a recent storm. Once inside the dome, things take a turn for he worse and Aria finds herself being rescued by an "outsider", a savage who lives on the outside of Reverie in the wastelands and who his worlds apart from her. Aria and Perry team up for a similar cause, even though they are anything but similar. Can Aria adapt to this new world and find it in her to see eye-to-eye with the savage from a different world?
After the showdown between Maven, Cal and Mare, the latter two are on the run from the new Silver King and on a mission to find other Newbloods to help overthrow the government. Without knowing who she can truly trust, Mare finds herself shifting allegiances and allies to ensure her win against Maven, once her friend but now a crazed king.
In a world divided by classes, Laia and her family struggle daily to survive under the Empire's Martial rule. One night, Laia's home is raided by Masks on suspicions of treason. Her brother is arrested, her grandparents are killed right before her eyes, and Laia is forced to escape into the night.
There are two sorts of people who coexist in this new world: Reds and Silvers. The former are humans who bleed red and have no special ability. They are slaves to the other class and have no way of escaping their fate. Silvers are a special breed of superhuman that have special powers and who rule over the lower class with an iron fist.