A young slave named Wander flees his brutal life and falls in love with Mono, a cursed girl blamed for her mother's death. When her drunken father accidentally kills her, Wander steals an ancient sword and rides to the Forbidden Land. There, the disembodied spirit Dormin offers to revive Mono—if Wander slays sixteen giant colossi guarding the land. As Wander kills each magnificent creature, dark tendrils pierce his body, slowly transforming him. Lord Emon and his warriors hunt him, but Wander persists. After his horse Agro sacrifices himself to save Wander, Wander defeats the final colossus—only to discover Dormin has used him to resurrect its own monstrous form. Wander fights for control, sacrifices himself to stop Dormin, and is reincarnated as a baby in a secret garden where Mono and the surviving Agro find him.
