In the world of Troy, every inhabitant possesses a unique magical power. Lanfeust, a young apprentice blacksmith able to melt metal simply by looking at it, lives a peaceful life until the day he comes into contact with a mysterious sword that suddenly grants him every power. Accompanied by the wise Nicolède, his daughters C’ian and Cixi, and the troll Hébus, he leaves his village to understand the origin of this extraordinary ability. His journey takes him across Troy on the trail of the dangerous Thanos, who is also connected to the sword’s power and is determined to use that force for his own ambitions.