A lamb decides the only way to kill the wolf that murdered his mother is to stop being a lamb. What starts as revenge becomes something far darker: watching innocence transform into the very thing it hunted. By the end, you're not sure if he won anything at all.

Chirin, a newborn lamb, lives a calm life with his mother in a fenced meadow alongside the rest of the flock. That peace ends when a wolf named Wor attacks in the night and kills his mother. Grief-stricken, Chirin vows revenge, and he decides that to defeat a wolf he must turn into one himself. Leaving the safety of home and childhood behind, he heads out into the wilderness in search of the feared Wolf King, with no idea what this change will cost him. The film is a dramatic fantasy adventure about loss and vengeance, told through a deceptively simple animal story.