Danish "Dan" Walia (Varun Dhawan) is a hotel management trainee working for an internship course in a hotel (The Radisson Blu in Dwarka) in Delhi. Dan is a man of careless attitude who does not like his job due to the low-class errands and has strained relations with most of his co-workers and seniors, contrasting with his co-worker Shiuli (Banita Sandhu) who is calmer and good at her job. If Dan fails the internship, his diploma can be canceled, and his parents will have to pay Rs 3 Lakhs as bond money to the hotel. Dan's manager is Asthana (Prateek Kapoor), who takes a dim view of Dan's attitude towards work. Dan is assigned to floor cleaning duty, when he fails to take adequate care of a child that a guest had mistakenly left behind in their room. Instead of alerting anyone, Dan put the child on the cleaning cart and ran away. The kids was eventually founds and reunited with his parents by Shiuli. Asthana downgrades Dan to laundry duty. Despite his antics, his colleagues like Dan, and try to cover him in front of Asthana, as much as possible.On New Year's Eve Shiuli and the other hotel interns party at the top of the terrace, but Dan is nowhere to be seen. Shiuli falls from third floor of the hotel and gets injured.Critically injured, Shiuli is admitted to the hospital, and goes into a comatose state. The doctors perform surgery on her brain and remove a large clot to help her survive. Shiuli fell from a height of 30 feet and has Subdural Hematoma on the right side, and her spine is also impacted. When Dan learns about Shiuli's accident, he visits her in the hospital. Empathizing with her condition he begins visiting her regularly and develops an emotional attachment towards her when he comes to know that her last three words before her fall were just about him. She had asked "Where is Dan". Shuili is covered in tubes and is kept alive by a ventilator. She is in a pitiful state.Dr Ghosh (Ashish Ghosh) is the neurologist attending to Shiuli. After seeing her CT scans he says that there is extensive damage to her white brain area, which is very difficult to recover from. Ghosh suggests that they keep Shiuli on ventilator a little more to give her a chance to fight. Dan becomes obsessed with Shiuli and starts camping at the hospital. He becomes a regular with the hospital staff who is unable to ignore him due to his "in your face" attitude. Dan regularly flouts hospital rules to meet Shiuli in her ward and talk to her, even though she cannot respond or even hear him. Shiuli's mother Prof. Vidya Iyer teaches at IIT Delhi. The bills at the hospital start piling up.Due to his frequent visits to the hospital, his internship at the hotel suffers and he is fired. Shiuli has a stroke and an epilepsy attack after a couple of months on the ventilator. When the bills pile up, and the doctors start giving up hope, Dan intervenes to convince everyone that Shiuli can still come back. Dan is particularly harsh with Shiuli's uncle Jairam (Shekhar Murugan), who is very negative and always advises Shiuli's family to remove the plug as he doesn't think Shiuli can ever recover and the family cannot bear the expenses to keep her alive. Dan says that he does not believe that Shiuli would want to die and that nobody else should have the right to decide on her behalf.Dan remembers that Shiuli was fond of Jasmine flowers and keeps some by her bedside. Shiuli's nose twitches due to the Jasmine flowers and that indicates that she is conscious. As months pass by, Shiuli slowly starts to recover, but she doesn't recognize Dan. Dan is kicked out of his apartment by his flat mates Ishani (Isha Chaturvedi) & Manjeet (Sahil Vedoliyaa) (as he doesn't pay rent and has borrowed from both of them). Eventually Dan's mother (Rachica Oswal) has to intervene and get Dan to come to his senses as she thinks he is wasting his life away over a stranger. Shiuli's mom Prof. Vidya Iyer (Gitanjali Rao) asks Dan to leave. Dan gets another job at a different hotel in Kullu where he becomes a manager; however, unable to take Shiuli out of his mind, he returns to her. When Shiuli is discharged and taken home, Dan continues taking care of her.One night, Shiuli has a seizure; her lungs collapse, and she dies. Deeply grief-stricken, Dan takes the tree with himself under which Shiuli used to play as a child as her last memory as her family moves to Trichy. Shuili means Night Jasmine, a flower that blooms for a brief duration only in the month of October.