Marta's father, when she was still a child, killed himself for having been harmed in his business by his partner Humberto, a producer of grapes and wine. Twenty years later, pretending to be blind, Marta befriends Humberto, who invites her to spend a few days with her family. She knows all the members of the clan and puts into practice the plan of revenge that she had devised since her father's death and the poverty to which she and her mother were relegated.
