Amaranto Molina is an unconventional music teacher who starts teaching at a music school that only encourages students who do well by commercial success standards.

Every year the Principal chooses five students to be part of the school's prestigious teen band. Molina, however, is put in charge of The Low Tones, a group of students whose talents do not meet the school's standards.

With his disruptive methods, this eccentric teacher and The Low Tones begin a music journey that will help heal wounds and inspire each one of them to express their unique talents. Along the way, the students will learn more about their teacher and his mysterious past.