Raúl, a young taxi driver sets out to find his father. He is helped by an upper-class girl who recently left her family and moved into the neighbourhood. Together, they will reveal the mystery around his birth. This episode begins when Eustaquio’s body arrives in Mexico, and Raúl asks his mother why she lied to him regarding his father. Meanwhile, in an upper class neighbourhood in Mexico City, Lucía is preparing to leave home, disgusted after being raped by her mother’s lover. By chance, she climbs into Raúl’s taxi and befriends him. They stay together, despite the fact that they belong to different social classes. This seemingly perfect love story, however, is doomed to failure. The titles of the nine episodes in this series were taken from the hierarchical and racist caste system that the Spanish conquerors imposed on the indigenous people in the New World. Set in contemporary Mexico the story reflects a society that remains very stratified.