Delhi Belly is an adult action-comedy film. The movie revolves around three roommates – journalist Tashi (Imran Khan), photographer Nitin Berry (Kunaal Roy Kapur), and cartoonist Arup (Vir Das). Their lives take a turn when they become the target of a gangster named Somayajulu (Vijay Raaz), after misplacing his diamonds. Sonia (Shehnaz Treasurywala), Tashi’s girlfriend, agrees to deliver a package containing diamonds to Somayajulu without knowing its contents. Sonia hands the package to Tashi to deliver it, and Tashi hands it to Nitin, who is suffering from diarrhea. Nitin, in turn, hands the package to Arup along with the package containing his stool sample to be delivered to Nitin’s doctor. Arup mixes up the two bags and then begins the game of hide and seek between the gangster and three friends.