Thorne is an Essence. Existing in Earth's parallel dimension Ethra amongst eight others like him—and yet each crucially different—his eternal purpose remains unchanging. He must contribute to a system of free will where human spirits are supplied with a series of key qualities. A gaping flaw presents itself when Kayna, an Essence of the darkest nature, wreaks havoc amongst the people of Ethra. ​ The Essences face a difficult decision. Are they to clean up the messes forever left in Kayna's wake, or defy the freedom they were granted in the beginning to capture her?