The Evertree by Marie Lu

Conor, Abeke, Meilin, and Rollan were once ordinary kids. Then they discovered that they had spirit animals-wise and powerful partners who granted them with amazing gifts . . . and a legendary responsibility.

Together, the team has journeyed across Erdas, racing to stop a merciless foe. They have laughed and fought together. They’ve won challenges and lost friends. Some have even lost themselves.

Now that journey is about to end. They must reach a place forgotten by time and face off against an ancient enemy breaking free from his prison. They have just one chance to stop him . . . or the whole world will shatter.