This is the story of two conflicted families, the Ramírez and the Valdéz. Justo Ramírez, the most powerful and perverse man in the town, is married to Margarita Insunza; Both are owners of the estate "Piedras grandes" and have a son, Alejandro. The family Valdéz Rivero is formed by Rigoberto Valdez and his wife, Francisca Rivero, and their daughter, Alfonsina; With them also lives Gertrudis, the sister of Francisca.

The confrontation of these two families has its origin in two reasons: the first is that Justo has always wanted to appropriate the spring, an outbreak of water belonging to the Valdéz family, but despite all his efforts, Justo has never managed to get Rigoberto to sell it. The second reason is that Justo and Francisca have been lovers for years.