Tulus panicked when his older sister, Dinda, fainted at school after being hit by a ball. Things got worse when his only sibling was diagnosed with a fatal disease. Tulus witnessed his parents’ tearful struggle to pay medical bills, even being chased by debt collectors. At the age of 7, Tulus tried to do the best he could, by sending letters to God.

Jassi Randhawa (Ajay Devgan) is an unemployed good-for-nothing man who receives a letter from the Punjab government about buying his property in Punjab. To sell the property, Jassi leaves for Punjab. On the train, he meets and falls in love with Sukhmeet (Sonakshi Sinha). In Punjab, Jassi accidentally meets Billu (Sanjay Dutt) and, seeing he is new to the area, Billu invites Jassi to his home, where he treats Jassi like a god. There, Jassi realises that Billu is Sukhmeet’s brother. Soon enough, it is revealed that Billu is Balwinder Singh and Jassi is short for Jaswinder. However, Billu’s family has to follow one Punjabi rule: A guest in the house should never be harmed. Now, Billu must wait for Jassi to leave the house to kill him. Jassi learns about it and comes up with a hilarious plan to foil Billu’s shenanigans.