Margarita...
a young journalist, shares a luxurious mansion with her husband, Dr. Faust. At first glance, they seem to be a perfect family, with beauty, health, and a lot of money. However, appearances can be deceiving. Margarita's life has become hell, as everything she does seems wrong in her husband's eyes. He tries to make her sick intentionally, with the complicity of Dr. Daniela, her sister, who is smart, sexy, beautiful, and a patient killer of her colleagues to gain respect in the hospital where she works with Dr. Fausto and Dr. Saldivar. One day, Margarita meets a homeless old man whom she calls Merenguito, due to him constantly shaking. It was surprising for her to discover that this man lives in the darkest place in the city being so bright. What mysteries are hidden behind him?