Rosa Puentes (Carla Hernandez) and Eva Sotomayor (Thali Garcia) are childhood friends who grew up together at a village boarding school. Eva was sent there as a child by her grandmother who despised her and Rosa was sent there as a baby with only a letter and some diamonds, one pink, to cover her educational expenses. When Eva is deceived and becomes becomes pregnant by man from the city who calls himself Adam - actually Jose Ignacio Altamirano (Mauricio Ochmann) - Rosa swears revenge against him and when the child is born, the two make a pact to both raise him as their son.
When Eva's grandfather Eduardo Sotomayor, the only family member who ever cared about her, dies of a heart attack, she is told to come to the city for the reading of his will and asks Rosa to accompany her. On their way, they are involved in a fatal auto crash with Rosa as the only survivor. Rosa eventually makes it to the city but injured. In the hospital she is mistaken as Eva and eventually sticks with it in an effort to protect Eva's child who has been left parentless. Rosa also has her own problem of not knowing who her parents are. She becomes Eva Sotomayor, the president of Venus, the family company she has bequeathed to Eva in her grandfather's will. Along the way she meets makes enemies including Margaret Bridges, the mistress at the school where she was raised, who also has her own plans for taking over and Barbara Montenegro, the real Eva's jealous cousin who will fight to keep Jose Ignacio, who has now fallen in love with Rosa, the fake Eva.
Jose Ignacio on the other hand, has no memory of the rendezvous with Eva, and now loves Rosa, thinking she is Eva. He is not aware that he has a son and has to deal with his father, Gerardo, the owner of Venus' rival company Acua, who hates the Sotomayors and wants to see their downfall. He also has to deal with Barbara, his girlfriend who is overbearing and Sergio, his friend who is addicted to gambling.
