When Refugio and his three children, Patricio, Edmundo and Ignacio are thrown from their home, by chance of destiny they arrive at the city of Mexico, where they initiate a new life. Eighteen years later, they find themselves established in a small apartment in a popular area. She has a modest job, and although she has serious eye problems, she does not take care of her health by attending to the needs of her children. Patricio studies Laws and dreams of a comfortable and prosperous future; Edmundo studied Medicine and is a bright but undisciplined student, and Ignacio was only able to finish high school because he works in a mechanic's workshop, because he helps his mother to pay the expenses of the house and the studies of his brothers.