Blamed by her father for failing to meet his expectations of being a good cheerleader and scorned by her sister for being too childish, Lucie is drawn to the attention of an attractive boy who promises her a night of excitement and revelry. Entranced by his charm, Lucie soon discovers that the young man is, in fact, the devil in disguise. Under his influence, she signs a pact and becomes a "Macrale"—a witch endowed with dark powers in the Walloon tradition. At first, Lucie revels in her newfound abilities, intoxicated by the freedom and strength they bring. However, her initial excitement quickly turns to despair as her dream transforms into a nightmare. Bound by the devil's pact and alienated from her family and friends, Lucie must use her cunning and determination to fight for her freedom and reclaim her place in the world.