Across a college in Ooty where Shreenath Prasad aka ‘Seenu’ (Varun Dhawan) fails his final exam by two marks. Eager to get a degree, he kidnaps the professor’s daughter during her wedding and demands his professor to give him two more marks in exchange for his daughter. Seenu accidentally lets go of her however while letting his parents in to his house, and his plan fails.
Although Seenu’s father offers him a job at his grocery store, Seenu plans to get a degree at Tift College in Bengaluru. He leaves Ooty on a train headed for Bengaluru. On the train, he beats up a gang harming a group of teenage girls. When Seenu arrives in Bengaluru, a friend of his who lives there reluctantly allows him to stay in his house.
Once Seenu arrives in Tift College, he prays to Krishna(Salman Khan) to concentrate on nothing but studies. However once he finishes, he sees a girl named Sunaina (Ileana D’Cruz) and gets attracted to her. He tries to get her attention, but she ignores him constantly. She tells him that she has been forced into marrying a corrupt policeman named Angad Negi (Arunoday Singh) since he tricked her father into shooting Angad’s sidekick and friend Peter’s arm. Angad’s mens chase Seenu until he beats up two of them and scares away the rest. Seenu goes to Angad to make a truce with him and leave Sunaina, but Angad (believing he cannot do it) gives Seenu a chance to try to woo Sunaina for up to three days. Seenu publicly tells Sunaina he loves her and tells her not to be afraid of Angad and his goons. She gains courage, scares off Angad’s mens, and falls in love with Seenu. Angad finds Seenu, finds out what happened, and attempts to shoot Seenu, but instead accidentally shoots Peter. The media quickly finds out and Angad gets suspended as a police officer.
All seems well until Sunaina is kidnapped and taken away in a helicopter. Seenu learns from Angad that Sunaina will be taken to the mansion of Vikrant Singhal (Anupham Kher), one of Asia’s most notorious gangsters. Vikrant’s daughter, Ayesha (Nargis Fakhri), was on the Ooty to Bangalore train Seenu was in and was attracted by his impressive fighting skills. She told her father about the experience as well as her interest in marrying him. Angad and Peter told Vikrant’s men that in order to get Seenu, they would have to take Sunaina to lure him to their place, forcing Seenu to marry Ayesha.