A poor peasant sells his little daughter to a foreigner. He takes her north, to a city called Copper Hills, ruled by an immortal Ruler. She doesn't have a name anymore, she's just a "girl" and a "candidate." She is settled in the house of a mysterious Manager, who, appreciating her beauty, gives her the name Emerald. But the rebellious heroine disfigures her face, calls herself Green and runs away. Of course, she is not given to know that this is only the beginning of her fantastic adventures and incredible trials on the path to freedom...