This contemporary romantic drama traces the twists and turns in the life of Balan K. Nair (Dulquer Salman), who calls himself BKN, a confused young man. He is employed as a reporter in a famous daily based in Bangalore. After insulting his ex girlfriend on Facebook in a drunken state, Balan feels like his life is not in sync. He is the 'loser' of his family, since his brother Rocky K. Nair; (also played by Dulquer Salman) is a successful doctor.
He leaves his parents' house to become a columnist. He lives with his close aid Ummar (Sekhar Menon), who is a foodie and an avid computer gamer. One day, Balan meets Sheela (Nithya Menon) when they both get into a taxi at the same time. Balan sees her and instantly falls in love. As the taxi drives away, Balan sees Sheela's bag lying on the floor. Inside the bag, there is an old camera with photos of certain places and certain people in Bangalore. Balan and Ummer use the pictures as clues to try to find Sheela.
Just as Balan begins to lose hope, he meets Sheela at a hospital by chance, where Sheela reveals that she already knows Balan. Apparently, Balan was her bully back when they were in school, and she was also the reason that the whole school ended up hating him and calling him a Loser. He immediately tries to avoid Sheela in the future. However, she keeps meeting him and poses as his girlfriend in his ex-girlfriend's marriage.
Due to her timely support, he is saved from an embarrassing situation and doesn't lose face in front of his elder brother and his ex-girl friend. He realizes that she is good-natured and falls in love with her again. He talks to her and gets to know her further. She seems to have come into her own and has begun enjoying life after the difficult time she faced in school.
Balan helps Sheela to take all the photos of places where her parents fell in love. For the last photo they need to find an old scooter. Balan finds the scooter and they take all the photos and Balan drops Sheela and takes the camera from her and tells her he will edit and give. That night Balan sees Rahul (Rahul Madhav) proposing to Sheela. Balan feels upset and lost. He tries to talk to Rahul, but Rahul ends up being extremely possessive and haughty. Balan tries to win Sheela back, but she says she believes in arranged marriages and does not care about love.
At the same time, Ummer tells Balan that he must go to the U.S to work with his dad. Balan's life spirals out of control. He begins to drink excessively, and Sheela becomes worried for Balan. On Sheela's parents' 25th anniversary, Balan forgets to bring the photos as this is the gift Sheela was planning to give her parents. With a great deal of difficulty, Balan succeeds in reaching on time but Sheela still shouts at him. When the presentation is displayed she realizes that she was included in all the photos along with her parents, which comes as a surprise for her.
Later she regrets scolding Balan and goes to apologize a drunken Balan. He explains that it is easy for him to become like Rahul, however he plans to stay 'original'. He also tells Sheela that he will come the next morning with the scooter if she was ready to come with him.
Next day, Balan plans to go and tells Ummar to give the scooter back but he forgets about what he told the previous night. An excited Sheela comes running out hearing the sound of the scooter expecting Balan but she is disappointed to see only Ummar. They both have a conversation and they head to the railway station where Sheela confesses her love for Balan, and they both live happily ever after.