In a wealthy noble family, a blind boy, Petrús, is born. His world is one of sounds, touch, and vague intuitions—gradually revealed to him through his mother’s gentle love and the stern upbringing of his disabled uncle. Music becomes the only way for the boy to express what is inaccessible to his sight, and to pave the way from inner darkness to spiritual light, from loneliness to people. This is a subtle and profound tale about how a congenital affliction can become not a curse, but a source of special strength and genuine artistic insight.