Documentary about the life of Alberto Sánchez Mascuñan, a communist who returned to Spain in 1944 from his Mexican exile. After two years in the strictest secrecy, in charge of the propaganda apparatus of the Communist Party of Spain in Madrid and Valencia, he was arrested and sentenced to death. His Mexican nationality saved him. He spent 16 years in the Burgos prison. His daughter, born in Mexico a few months before his departure, did not meet her father or knew he was a political prisoner until she was 15 years old. The past is present. Sánchez Mascuñan's decisions marked the life of his daughter and also of his granddaughter Andrea Alvarez Sánchez, who directs the documentary. Andrea rescued 80 hours of recording in which Sánchez Mascuñan narrated what happened to him since he left Mexico in 1944 until his return in 1964. His testimony about life in hiding and in jail is unique. In the documentary, audio fragments of that testimony are collected, along with interviews with his daughter, images of his granddaughter who searched Spain for her grandfather's footprints, and graphic documents of his life adventure.