Each year, hundreds of Central American migrants journeying north towards the United States go missing. Their mothers, left behind with nowhere to turn for support, organize together and journey by bus through Mexico, retracing the last known steps of their missing children. Since you arrived, my heart stopped belonging to me is a short documentary that follows these mothers, offering a perspective from the alternate side of the immigration crisis. The film intimately explores the familial grief and longing of these mothers for their children and the tremendous personal costs of the social forces that affect migration.