La Misma luna tells the parallel stories of nine-year-old Carlitos and his mother, Rosario. In the hopes of providing a better life for her son, Rosario works illegally in the U.S. while her mother cares for her son Carlitos back in Mexico. Both Rosario and Carlitos embark on their own journeys in a desperate attempt to reunite. Along the way, mother and son face challenges and obstacles but never lose hope that they will one day be together again. This heartwarming family story deals with the issue of illegal immigration.