Centuries have passed since mankind vanished from the Earth, and in that time, the Wolves have risen to inherit the title of "Alpha Predator." They have lived in peace and thrived for generations. But that is all about to change... The Wolves tell stories, of beings that strode upright, the Walkers, who would one day return to ravage the Earth and take back their "Alpha" crown. Ukita, a young wolf, dismisses these stories as nothing more than fiction, until he meets one for himself. Faced with the looming shadow of a violent war between their races, these creatures must either learn to coexist as beings of nature, or fall to ruin.