Karthik (Naga Chaitanya) is a mechanical engineering graduate but aspires to become a filmmaker. Karthik's family rents the ground floor of a two-storeyed house which belongs to a Kerala Christian family who are very conservative Syro-Malabar Catholic Church family from Alappuzha, Kerala, who live upstairs. Jessie (Samantha Akkineni), their daughter, is 2 years older to Karthik. She has a brother Jerry(Sudheer Babu). When Karthik meets Jessie for the first time, he falls in love with her. Karthik expresses his love one day to her, who is afraid of speaking to men around her strict father, and ends up angering Jessie. Later Jessie goes to Alappuzha, her grandparents' place. Karthik gets to know this from his sister and goes to Alappuzha, along with his friend Krishnudu, where he gets introduces to her family as his classmate. Then Karthik tells her that they can be good friends. After coming to know from her that she is going back to Hyderabad alone, he decides to turn the friendship in to love in the train journey. In the train he kisses her for which she slaps him and later the two meet several times afterwards and Jessie begins to admit that she likes Karthik but wants to refrain from any problems because she knows her father won't accept a Hindu marrying their daughter. Now, Jerry finds that they like each other and in the fight that follows we come to know that Karthik is a part-time boxer where he beats up Jerry and his friends. Her parents learn about their affair with this fight and arrange a marriage for her. But at the wedding, she refuses to marry the groom, Roy Thomas, displeasing everyone in her family. Karthik and Jessie continue to love each other without the knowledge of their parents. Suddenly, Jessie is forced by her father to marry and seeks Karthik's help, who was in Goa for a film shooting. Busy Karthik is unable to attend to her calls and messages; Jessie is unable to reach him. After a tense phone call from Jessie, Karthik goes back one night t