Deep in the forests, a cave troll named Bog has spent his young life hunting with his father, Jeddal, learning what it means to be a troll, and avoiding humans whenever possible. Until someone called the Troll Hunter begins turning trolls to stone, and teaching other humans to do it, too. When the Troll Hunter’s followers turn Jeddal to stone, Bog learns a dark secret about his origins that his father had tried to keep hidden: Bog is half-human.
Struggling with this news, Bog sets out after the Troll Hunter to avenge his father. On his quest, he’s joined by a large forest troll named Small and a human girl named Hannie, who would rather pretend to be a troll than return to her abusive father. As they venture deeper in human territory, Bog learns of the legendary Nose Stone, a rock rumoured to bring a stone troll back to life. When the Troll Hunter seeks to destroy both the Nose Stone and Bog, his quest becomes a race of cunning, trickery, and wits.