Tutu (Ali Zafar) and Dev (Ranveer Singh) are two orphans who were raised by a local gangster Bhaiyaji (Govinda (actor)) to be assassins. Their life takes a turn when they meet Disha (Parineeti Chopra) at a club and she and Dev fall in love with each other. Dev's indifference towards work starts irritating Bhaiyaji, but Tutu defends Dev. When Dev is unable to kill one of their targets, he decides to change his life. This enrages Bhaiyaji and he threatens to kill Dev. Tutu intervenes and suggests Dev lookout for a job but should accompany him every time Bhaiyaji calls them to give killing contracts.