This story is set in the 13th century, in Britain, where Lancelot, who was raised by Vivian, the Lady of the Lake, becomes one the Knight of the Round Tables and falls secretly in love with Guinevere, the wife of King Arthur, for whom he wants to accomplish many deeds.
We are in 1814, in Auvergne, in the dark fir forests of Livradois, near La Chaise Dieu. Gaspard and his beautiful cousin Anne-Marie see their love thwarted and their lives disrupted because of a treasure that an old uncle, who made his fortune in Guadeloupe, buried in the mountains of Auvergne.