Daana Paani tells the story of Mehtaab Singh and Basant Kaur. Havaldar Mehtaab Singh is entrusted with the honorable responsibility of personally informing the family of a martyred Lance Naik about his wartime demise. However, his mission takes an unexpected turn when he encounters an oppressed young village woman named Basant Kaur. This fateful meeting changes their lives—and the lives of those around them—forever.