Pobre Millonaria

María Mercedes, a poor girl who sells lottery tickets, meets a rich man who hates his own family and sees in María Mercedes an opportunity to make their lives miserable.

Rebeca murders her sister Adriana to end up with the man she loved, and becomes the step mother of her niece Lucía. Nora, Lucía's half sister and daughter of Rebeca, resents Lucía for the same reasons Rebeca hated Adriana, as history repeats itself.

Teresa Chavez is a young woman with an obsession for money and ambition. Despite her beauty and the fact that she was raised in the bosom of a loving family, she is resentful; her one desire is to leave her humble but poor neighbourhood.

Maricruz and Beatriz are school friends; Beatriz comes from a well-to-do family, whereas Maricruz belongs to a lower socioeconomic stratum. Both are on the verge of turning fifteen and are preparing to leave childhood behind. Issues within their family and social environments affect them directly; for Beatriz, her parents' marital breakdown becomes the primary obstacle to overcome, compounded by a sexual awakening fraught with taboos and misinformation. Meanwhile, Maricruz must contend with her mother's overprotectiveness and prejudices, as well as the tension caused by a neighbor who is obsessed with her.