Gaston (Gustavo Bermudez) is one of the most important business men of the recording company in the country. These days, he is enjoying his last days as a bachelor. But in his stag party, he will meet Sisi (Camila Bordonaba), an insolent 19-year old singer. When she sings the song that he had given to the love of his life, he will find out that Sisi is the daughter of this love.
Once in his life he did not risk everything for love and now life is giving him a second chance: he feels that falling in love with a teenage girl is crazy. His wedding to Maria Pia (Lucrecia Blanco) is fast approaching and Gaston has a whirlwind of doubts Sisi discovers the man she loves is about to make a huge mistake. But she is not her mother; she will risk it all and fight for her love.