The film is about the time after World War 1, when Indian soldiers, fighting for the British were taken captive by the Germans and Half-moon, a prison camp near Berlin. The Germans subjected them to biological experiments, and also recorded their voices. Ninety years later, the director came across the audiotape of a colonial indian POW called Mall Singh, who spoke about his village and how he hoped to go back someday.
In his experimental search, Scheffner follows the traces of these voices to the origin of their recording. Like a memory game, which remains incomplete right until the end, he uncovers pictures and sounds that revive the ghosts of the past.