Lala Kedarnath, the eldest and only brother of four sisters named Gayatri, Durga, Laxmi and Saraswati, runs a chaat shop named Premlata Chat Bhandar that was started by his grandfather. Lala promises his frail mother on her deathbed that he will only get married after he fulfills the responsibility of marrying his sisters into suitable homes first. Lala’s relentless efforts of getting his sisters married while upholding his family values go in vain, as he faces hurdles to find suitable grooms due to Laxmi’s dark skin, Durga’s weight and Saraswati’s masculine behaviour. At the same time, Lala’s commitment to his sisters stands as a huge roadblock for his and his childhood love Sapna’s relationship to take off.
Understanding the importance of Lala’s vow, Sapna decides to wait till his goal is achieved. But her father Harishankar always nags her to get married. Sometime later, Lala manages to gather ₹18 lakh (US$23,000) for Gayatri’s dowry. Gayatri gets married. After the marriage, it is revealed that Lala is not their real brother and that their mother adopted him long ago when his real mother died near the temple. Lala arranges money for Durga and Laxmi’s wedding by selling his one kidney, but things didn’t go as planned when Gayatri commits suicide by drinking poison: her husband and in-laws were asking for more dowry, but she didn’t say anything to Lala as she didn’t want him to get more stressed. Lala realizes the curse of the dowry system, and vows that he will make his other three sisters capable enough for their future so they can choose their own groom and marry without a dowry.
