Yair Lev, a Israeli documentary filmmaker turns a detective and sets on a personal and historical journey to uncover the true identity behind the man who stole his grandfather's identity and later on became the president of a Jewish community in Austria. Who was this man who took another man's identity? Why and how did he do it? What dark past did he want to conceal? Was he a Nazi? A Kapo? This documentary detective thriller is a journey into the 20th century heart of darkness, which eventually reveals a drama of survival, collaboration with the enemy and finally, at the end of the night, an extraordinary love story.