The story starts with the love story of Amor (Eula Valdez) and Eduardo (Tonton Gutierrez). Eduardo's mother, Benita, opposes the relationship since Amor was just a maid and also because she wanted Eduardo to marry Claudia (Jean Garcia) for political reasons. Eduardo's brother, Diego (Jestoni Alarcon), who has a crush on Amor, was asked by Benita to separate them. Eduardo, on seeing Diego trying to rape Amor, mistook it as them having a relationship, and is heartbroken and decides to marry Claudia. Amor, now pregnant, is forced to leave the Buenavista Hacienda and went back to her mother at a trash dump site. She vows to have her revenge on the Buenavista family when she finds out that Eduardo has married Claudia.
After giving birth to a girl named Maria Amor, Amor and her friend Lourdes survived by working in clubs. Amor caught the eye of a rich American who brings her to the U.S.A. She leaves her child and mother at the dump and sends money to them from time to time.
The American was abusive to Amor. When a landslide hit the dump site, making Amor think that her mother and daughter had died, he still did not allow her to go back to the Philippines. She got her revenge on him by not getting the medical help he needed when he suffered a stroke. He died and she inherits all his money.
Eduardo and Claudia had two children: Angelo and Lia. Eduardo is the current Governor of Punta Verde while Claudia has become the ever elusive Gambling Queen. Angelo is a rebel who dislikes his father while Lia is the sweet, church-attending teen whose feelings everyone wants to protect.
Amor's daughter, however, survives the landslide and is adopted by a couple, Isko and Belen Macaspac. They already had a son named Caloy, who hated Yna. The couple found drawings Eduardo made for Amor, signed "Ynamorata" near the abandoned child, so they decided to call the little girl they found Ynamorata. Isko and Belen soon had another child, Flerida.
Benita Buenavista regretted forcing Eduardo to marry Claudia as her daughter-in-law turned out to be a bad lady. She tried to explain on her deathbed that she was the one who broke his relationship with Amor but died before explaining. She then haunted the dreams of the now grown up Yna to make up for her sins.
By accident, Yna and Eduardo meet and Yna dreams Benita showing her that her past lies in the Buenavista family. Intrigued, she gets a job working as a maid for the family in hopes of finding out about her past.
Yna and Angelo fall in love, much to the chagrin of Claudia, and due to the fact she looks down on maids, makes Yna's life a living hell.
Amor, coming back from the US as Amor Powers, has made a name for herself in the business world, all the while planning her revenge on the Buenavista family, whom she blamed for the sufferings she endured before as well as the assumed death of her child. One of the most awaited parts is the revelation to Amor that Yna is in fact her long lost daughter.
The dilemma is that, after finding out that Yna's true father is Eduardo, Angelo and Yna are therefore siblings. It is later revealed that Angelo's true dad is not Eduardo. It is at 1st thought to be Simon (who was a poor lover of Claudia), but it is later revealed to be Diego's with a poor woman who died.
In turn's out that Claudia gave birth to a daughter; Claudia's father later switched the babies so a boy would inherit his riches. The daughter's name was Maria Amor, who was raised by an old woman and had her believing she was Amor's daughter (but her real name was revealed to be Clarissa) and was later briefly mistaken to be Amor and Eduardo's daughter by everyone, including Claudia. To seek revenge on Amor, Claudia kills Maria Amor. She later find's out who Maria Amor really is and is deeply crushed. When she reconciles with everyone in Yna and Angelo's wedding, she sees her daughter's spirit and begs forgiveness. At prison, she inherits her daughter's ashes.
The end of the series sees everyone reunited with their true loves- Yna marries Angelo, Claudia marries Simon Barcial, and Amor and Eduardo decide to live together.