Mariela Siachoque is a beautiful 30-year-old single mother who lives with her son and the rest of her family (father and two twin brothers) in a typical middle-class neighborhood of Bogotá. Gonzalo is a perfect exponent of the upper class. He is 33 years old, a millionaire and has no problem in sight. He lives by rumba, gambling and women and he cares little what happens to the company of which he is president by inheritance. Mariela and Gonzalo do not know each other and apparently they have nothing in common. Their worlds are different, their social classes do not intersect, and their personalities have little to do with one another. However, fate will take care of crossing them in such an unexpected way.