Life has not been easy for Mariana. She has grown up in a modest home with a heartless stepmother who treats her like a maid. Her father is a good man, hardworking and loving, but he has never been able to recover from losing Mariana’s mother, who abandoned them 18 years ago, and the heartbreak has made him weak.
Willy, on the other hand, has spent his life in luxury, enjoying the best that money can buy. But he has never been happy. Both his parents died when he was very young, and he was left in the care of his mean-spirited grandmother Gertrudis, who has never loved him. In fact, she only wishes the worst for him, and has succeeded in undermining his self-esteem so that he truly believes no one can ever love him for himself, only for his money. So now, as a grown man, his life is an endless succession of wild parties and meaningless affairs.
About to turn 30 years old, Willy urgently needs to comply with a clause in his mother’s will stating that if he is not married by the age of 30, the fortune will go to his grandmother. Because Gertrudis does not need the money, being rich in her own right, she is determined to make Willy marry Margot, a young woman she can manipulate to make him miserable.
Willy rebels against this imposition and decides to place a newspaper ad soliciting for a wife. Little does he know how much his life will change from that day on.
Mariana’s father is in jail for accidentally killing a young man who tried to rape her, and she needs money for his defense. When she sees Willy’s anonymous ad, she responds out of desperation and is selected amongst several candidates to be the millionaire’s bride, without ever having met him.
But as fate will have it, when Mariana and Willy do meet, they do not know each other’s real identity. Both believe they have found their one true love, so a few days later, when faced with the truth after signing the agreed marriage contract, things take an unexpected turn. He suddenly sees Mariana as a cunning gold digger, while she feels that she is being bought.
In spite of how much they really feel for each other, the marriage starts out poisoned by mistrust and misunderstanding—which are only exacerbated by the evil deeds of Gertrudis, Margot and others who ruthlessly plot against the couple. Only time, and true love, will help Mariana and Willy find the happiness they deserve.