Dia Swaroop, a biotechnology student is an introvert girl living in Bengaluru. She develops a crush on her senior Rohit, but due to her introversion fails to express her feelings before Rohit moves out of the country. Dismayed, she goes about her routine life. After three years, Dia encounters Rohit again in Mumbai where she has moved and is working. Unable to overcome her introversion again she fails to talk to him. However, Rohit talks to her and they both gradually develop a bond. Rohit reveals that she was his crush and proposes his love for her. She confesses and accepts him. One night as they were returning from a movie, they are met with an accident. As Dia wakes up in the hospital and asks for Rohit, she's told by her uncle that Rohit passed away. Unable to accept Rohit's death, Dia goes into severe depression and decides to kill herself at the railway crossings. As she stands waiting for the oncoming train she's interrupted by a phone call from a good samaritan, Adi, who had retrieved Dia's bag from a thief, which she wasn't even aware of. Miffed at the interruption she tells him to keep it and not to call her again. Coincidentally Adi and Dia keep bumping into each other and Dia reveals her past to him. With his happy-go-lucky nature and charm Adi manages to bring Dia out of her turmoil and develops a friendship with her. Soon they realize how much they like being with each other and confess their love. Dia returns happily to Mumbai, where she's shocked to find Rohit waiting for her. It is revealed that Rohit was declared brain dead with no certainty of him returning hence her father lied to Dia so that she will move on. Miserable, she calls Adi and tells him. Adi, although heartbroken, tells Dia to live happily with Rohit. Adi gets to know of Dia's reception and goes to see her for one last time despite his mother forbidding him. He meets a disheartened Dia and happy Rohit and wishes them well and returns home. There he finds that his mother died due to massive cardiac arrest and that she could have been saved if someone was around her. Meanwhile, Dia confesses everything to Rohit, and distressed Rohit tells her to go back to Adi so that she will be happy. Elated, Dia goes to Adi's home and finds him missing. She searches for him everywhere until an auto driver reveals that Adi has gone to the same place she went to commit suicide. Adi, feeling immense guilt over his mother's death and feeling unable to live without his mother and Dia, has decided to commit suicide at the railway crossings. He prays to God one last time for the happiness of Dia and waits for the train. Dia frantically reaches him on time and calls him out. Adi turns to her surprised and awestruck that he forgets to move and gets hit by the train as a startled Dia watches on.