The Shades in Chaos have one goal: get to Earth Realm and wreak havoc. For a select group of people called Realmwalkers, sleep is the gateway to another realm known as Chaos. When 17-year-old Addy is called to Chaos, she yearns to conquer her crippling fears and prove her mettle by fighting alongside her fellow Realmwalkers. While she hopes to impress their handsome leader, Sam, she's also keenly driven by the urge to protect the ones she loves on Earth. The Realmwalkers are baffled, however, when they encounter a powerful and seemingly invincible Shade with strange motives and a dark obsession with Addy. As they work to unravel the mystery to defeating this new threat, Addy finds herself at odds with the Walkers. Gut instinct says to put her faith in Mikhail, the black sheep of the group, but she fears losing the respect and friendship of the others. Addy is willing to die to keep Earth safe, but the Walkers are her new family, and she's on the verge of falling in love. With Addy coming into her own, death shouldn't be on the horizon. But when the doors of hell are ripped open, there are no guarantees.