Mother and daughter, separated and alone, mourn the death of their respective husband and father. After this, they begin to hear mysterious noises and enter a progressive spiral of terror and paranoia. The different ways of facing loss, anxiety, pain and lack of communication.

Daniel’s decision to travel to East Berlin in the middle of the Cold War to meet his birth mother turns out to be the biggest mistake of his life because, unbeknownst to him, he will become the essential piece of the KGB’s secret plan to set up their operations center in Francoist Spain, where his identical twin brother Klaus will play a key role, stealing his identity, his family and his entire life.