40 y Tantos[1] (International Title: 40 Something) is a Chilean telenovela produced by TVN and directed by María Eugenia Rencoret and Ítalo Galleani.
The series was written by Marcelo Leonart, Ximena Carrera, Andrea Franco, Carla Stagno and José Fonseca.
Diego, who is the oldest, is in charge of his father's company, Elizalde Communications, where he works with his two brothers, Rosario and Marco, and his assistant and lover, Susana Jerez (Mónica Godoy).
Rosario is a working single mother who has to deal with Diego as the chief of the family business and has to raise his son Cristóbal (Nicolás Brown), who is addicted to drugs and has connections with Joaquin Sarda (Andrés Velasco), his best friend and partner in the firm, who is going to marry Renata Santelices (Katyna Huberman).
Marco is a married gamer, who supports his family, and is immature as well as the only witness to the relationship between his niece, the daughter of Diego and Loreto, Fernanda Elizalde (Juanita Ringeling) and a professor of the university, Gaspar Mellado (Bastián Bodenhöfer), who is 30 years her senior.