Dianna thought sacrificing herself would save her sister. Instead, she unwittingly summoned Kaden, a fearsome entity, binding herself to his service for a thousand years. Now, in the deserts of Eoria, she's tasked with retrieving an ancient relic guarded by formidable creatures.

Meanwhile, the World Ender stirs. Once known as Samkiel, now living as Liam, he was a king and savior who vanished after the devastating Gods War. An attack on those he holds dear forces him out of seclusion, confronting enemies from a time long past.

As their worlds collide, Dianna and Liam must unite with timeless adversaries. The fate of their world—and realms beyond—hangs in the balance. Will they overcome their pasts to face the looming threat, or will darkness consume everything they hold dear?