The TV series "El Club de los Graves" tells the story of the eccentric music teacher Amaranto Molina. He teaches at an academy for gifted teenagers that specializes in creating popular and commercially successful bands. The top students in the course, who meet modern standards and audience demands, are given the opportunity to perform and promote their own work. But those who don't make the cut become the "second string." However, Molina decides to teach these talented misfits.