Kakak Hitler portrays the story of Indira Sharma, the sole working member in a family of six. Indira shoulders the responsibility alone, unware that it has changed her into a tough-hearted disciplinarian and a workaholic. On the other hand is Rishi, a young man with a jovial spirit, who brings a breath of fresh air into the Sharma family. What will happen when Indira and Rishi, with personalities as different as chalk and cheese, meet? Will Rishi be able to make Indira fall in love?