It recounts the reconstruction of the life of Ema Cabral, a Montoneros militant executed in the Margarita Belén massacre on December 13, 1976. During the course of her investigation, while Cecilia unravels the causes and consequences of the massacre, the Argentine justice system sentences eight repressive military officers to life imprisonment. But the mystery remains: where Ema's body is. Cecilia goes out to search for it but will never find it. What happens in a society that hasn't buried its dead? Unremitting to the void, the documentary filmmaker imagines what Ema's life would have been like without that December 13th.