• Producer : Sajid Nadiadwala
• Director : Nitish Tiwari ( Nitesh Tiwari )
• Writer : Nitish Tiwari ( Nitesh Tiwari ) , Piyush Gupta , Nikhil Mehrotra
• Screenwriter- screenplay : Nitish Tiwari ( Nitesh Tiwari )
• Composer : Pritam Chakravarty
• Lyricist : Amitabh Bhattacharya
• Actor : Sushant Singh Rajput , Varun Sharma , Prateik Babbar , Tahir Raj Bhasin , Naveen Kumar , Tushar Pandey , Harish Shukla
• Actress : Shraddha Kapoor

Aniruddha 'Anni' Pathak (Sushant Singh Rajput) is a divorced middle-aged man living with his teenage son Raghav Pathak (Mohammad Samad), an aspiring engineer, who is awaiting the results of his entrance examination in the hope of enrolling in the Indian Institute of Technology. On the eve of the results, Anni gifts Raghav a bottle of champagne, promising him that they will celebrate his success together, unaware that Raghav is under intense pressure. The bottle of champagne only fuels Raghav's worries as to what will happen if he does not make it. The next day, while checking the results at his friend's apartment, Raghav finds out that he has not qualified for IIT exam results and, afraid of being called a "loser", he deliberately slips off the balcony to commit suicide, but survives, although in a fatal state. Anni rushes to the hospital where he tries to comfort his ex-wife Maya Pathak (Shraddha Kapoor). She blames Anni for not noticing how much pressure Raghav was in. Dr. Sunit Dev Kasbekar (Shishir Sharma) informs Maya and Anni that Raghav's condition is deteriorating as Raghav does not have the will to live. Realizing that his son is afraid of being called a "loser", Anni, who stumbles upon pictures of his college days, begins to recount the tales of his time in college in an attempt to rekindle hope in Raghav, who he wants to believe that his father, too, was once a "loser". During the recount, the story flashes back to 1992 when it was his first day of college at the National College of Technology campus. Anni is allotted a room in the H4 hostel, which is infamous for housing "losers". The occupants of the H4 hostel have earned this tag for numerous unknown reasons, one of them being the poorest quality of mess food on the entire campus. Dissatisfied, he applies to change his hostel block although a clerk informs him that his application might take time. Meanwhile, a senior H4 student Gurmeet "Sexa" Singh Dhillon (Varun Sharma) pokes Anni in the butt the first time they meet, but they soon become friends, with Anni describing Sexa as a hypersexual senior who was obsessed with porn all the time. At this point, Raghav has a convulsion, causing Anni and Maya to panic, but Dr. Kasbekar reveals that he is now conscious, though his condition is still the same. When he asks about "Sexa", though, Anni, convinced that Raghav was listening, goes in with Maya to meet Raghav, who doubts if it is indeed a true story. Anni, convinced that he just needs proof to make his plan work, eventually traces Sexa, who is currently working as a consultant in London, through a call, and informs him about the tragedy. Sexa postpones his work commitments and flies down to Mumbai to reunite with Anni and Maya, and seeing Sexa, an initially dismayed Raghav recognises him when he mentions his collection of adult magazines that was exactly the same as mentioned by Anni earlier. Raghav puts all his doubts to rest, as Sexa continues with the story. Sexa narrates Anni's desperation to change his hostel, and in 1992, during their first conversation at a canteen, they notice Maya for the first time. As the story returns to the present, Sexa narrates to Anni and Maya during a lunch break how he and a guy named Himanshu 'Acid' Deshmukh (Naveen Polishetty) once received a funny pro-ragging request in 1992 from the father of a fresher named Sundar "Mummy" Shrivastava (Tushar Pandey), a young introvert who is tied to his mother's apron strings and is very dependent on her. At this stage, Mummy joins Sexa in present-day, working as an executive in the United States, which has thickened his accent. When both Anni and Sexa spill news of Acid's arrival, Mummy exclaims to Raghav that Acid is "bad news". Anni then describes Acid as a school topper who began flunking his college tests and developed a bitter, swearing tongue. A brief introduction for Acid soon pans back to Sexa's classmate joining them in the hospital. All of them briefly reminisce the fun they had in their college days, showing their photo album to Raghav and telling him about Anni's newfound relationship with Maya back then, even as Dr. Kasbekar, time and again, informs them that Raghav's brain is swelling, and his condition doesn't show signs of improvement. Meanwhile, back in 1992, super-senior student Raghuvir "Raggie" Chalkar (Prateik Babbar) a hostelite of H3, which is known to be a world-class hostel and the absolute antithesis of H4, fast-tracks Anni's application and offers him to come to H3, but Anni has a sudden change of heart while discussing this with Maya, later rejecting the offer, much to the chagrin of Raggie, who reveals that H4 super-senior Derek D'Souza (Tahir Raj Bhasin), a well-known athlete, has been "rotting" for the past three years after having similarly rejected a previous offer. Derek is revealed to be a chain smoker, and as he reunites with Anni, a scene of their first meeting back in 1992 plays out, wherein Derek reveals that Raggie is a full-bl

• Track 1 : Woh Din ( वो दिन )
• Track 2 : Khairiyat ( खैरियत )
• Track 3 : Kal Ki Hi Baat Hai ( कल की ही बात है )
• Track 4 : Fikar Not ( फिकार नाही )
• Track 5 : Control ( नियंत्रण )
• Track 6 : Woh Din(Film Version) ( वो दिन (चित्रपट आवृत्ती) )
• Track 7 : Khairiyat(Bonus Track) ( खैरियत (बोनस ट्रॅक) )