Do Lafzon Ki Kahani is a brooding love story with a little bit of action. This movie is based on the 2011 Korean movie ‘Always’ which has already been adapted into 2015 Kannada movie. Boxer Suraj (Randeep Hooda) is an ex-boxer who does multiple jobs to earn as much money as possible but lives a lonely life in Malaysia.
During his new job as a parking attendant, he ends up meeting Jenny (Kajal Aggarwal) a blind yet a cheerful girl who is surviving in the city all alone. They soon became friends and the chemistry sparks between the two. Suraj's old coach Om (Mamik Singh) calls him back to the club but Suraj tells him that he has stopped fighting. He reveals that three years ago, during a boxing match his opponent's wife begged him to lose as she needed the prize money for her daughter's treatment. In order to help, Suraj loses the fight intentionally but later discovers that it was all a plot set by the opponent boxer.
After trashing him in a nightclub, Suraj loses his boxing license and also stops trusting or caring for anyone. He later started working as a recovery agent but during one such recovery case, a man jumps out of his apartment window down on the road, leading to a car crash. Suraj has to serve 2 years in jail and since then taking care of treatment of that man.
Back in the present time, Suraj now falls in love with Jenny and wants to express his love to her, but on reaching her house he finds Jenny's boss harassing her. Suraj beats him up, at which Jenny gets mad as she feared to lose her job. Suraj promises to take care of her and takes her home. He proposes Jenny and asks her about her parents. Suraj is then shocked to discover that Jenny's blindness and her parent's death are due to the same car crash 3 years ago. Weighed down with guilt, Suraj decides to get Jenny operated but needs 3 lakh rupees within a month. Suraj, who has already returned to part-time boxing asks for help from his coach.
Suraj's old archrival Sikandar offers him to join an illegal fight club, where the owner Gavin (Yuri Suri) pays him 3 lakhs to lose a fight. Om tries to stop Suraj as these kinds of fights may lead to fighter's death or permanent handicap. During the fight, Sikandar provokes him and Suraj beats him up. Angered Gavin gives Suraj a last chance to pay back by delivering a bag of drugs. While Jenny is been operated in hospital, Suraj delivers the package only to be run over by Sikandar's car, leading to severe spinal injury.
After getting her eyes back Jenny is disappointed not to see Suraj and mistook that he abandoned her. 6 months later, Jenny is now working at the same hospital as a physiotherapist, where Suraj is getting treated but she’s unable to recognize him. Suraj too didn't reveal his identity to Jenny, because of his paralytic condition. On getting able to walk with clutches, Suraj decides to finally meet Jenny but seeing her with another man, he thinks that Jenny has now moved on. Hence, Suraj walks away with heavy heart and visits the place where they both used to spend quality time. While searching for Suraj, Jenny reaches the same spot and they reunite in the end.