This is the plot of a soap opera called "Patito Feo", From Argentina. This Soap Opera is a huge hit in Argentina and in the whole world. Even it was broadcast in Portugal.
Carmen, a single mother lives in the city of San Carlos, with her daughter Patricia also known as Patito. Patido falls in love with Matias at the first time she saw him. Matias had been there for vacation and soon after he went back to his hometown, Buenos Aires.
Some time later, Carmen and Patito go to live in Buenos Aires, due to a surgery that Patito has to undergo. There Patito meets the hospital director, Leandro, who by chance is her father, even though they don’t know this, because fourteen years ago Carmen and Leandro were in a relationship, but Leandro had to travel to Buenos Aires to find a job and they broke up and Carmen decided to hide the pregnancy from him for all time.
Because of the love for music that Patito has, Leandro suggests that she go to "Pretty Land School of Arts", where Leandro’s mother is director. In the school Patito by chance meets Matias.
In the meanwhile, Patito and Carmen meet Blanca, Leandro’s fiancée and her children from a previous matrimony, Antonela and Facundo who go to the same school as Patito. For this reason a rivalry arose between Carmen and Blanca, and also between Patito and Antonella because she is dating Matias.
In the school, two musical groups are created: One is “las divinas”, led by Antonela and the other one is “Las populares, led by patito. Both groups compete in the musical comedy class to represent the school in an interschool tournament