In the summer of 1870, Raquel, who owns a farm, and lives secluded in her mansion with an old butler and a handful of servants, feels proud when an odd acquaintance comes by. Adriana and her daughter-in-law, Ermesinda, a very young girl, just happen to be visiting - the second time in 15 years for Adriana, and the first time for the teenager Ermesinda. The meeting seems to be pleasant, and yet, for reasons untold, there is coldness and reserve between Adriana and Raquel. Their ambiguous relationship will be revealed, when by accident old wounds are reopened.

In an isolated village of the Alentejo region, a conflict arises. José Vitorino, one of the landowners of the region, rich in prehistoric monuments, wants to build a luxurious solarium in lands filled with ancient rocks, places of devotion and sacred rituals. Indifferent to the people’s protest, who believe in the magical powers of the stones and that the region’s drought is due to the rocks’ destruction, José Vitorino hires an architect to plan his new house. On christmas eve, in the middle of the winter solstice, a strange ceremony around a dolmen, once an altar for bloody sacrifices in more remote times, releases a harmful spell. A race against time to reverse the faulty charm begins.