The Mothers of Plaza 25 de Mayo in Rosario began meeting to search for their children who had disappeared during the military dictatorship that ruled the country between 1976 and 1983. The documentary tells the story of each of them and how those stories transformed into a collective struggle that continues to this day. Absence is a recurring theme throughout the narrative. But, despite everything, the mothers managed to transform those absences into a powerful presence and the reason for their struggle, becoming the most active sector of the resistance against the dictatorship.