A prodigy of stringed instruments, a pioneer of Bossa Nova, a modernizing master of the guitar: Aníbal Augusto Sardinha, better known as Garoto (1915-1955), is one of the hidden pillars of Brazilian music. Woven by rare archival material, personal diaries and testimonies, this documentary reveals his influence and the artistic conflicts of an avant-garde artist in the golden age of Brazilian radio.