Yeh Jawaani Hai Deewani features two polar opposite characters, who at one point were classmates in Modern School. The first is Naina Talwar (Deepika Padukone), a studious bespectacled young girl. The second is Bunny (Ranbir Kapoor), a carefree young travel-show host, intent on breaking out of the pattern of getting an education, a career, a wife, children, retirement, and eventually death.
Kamal (Jayam Ravi), a young billionaire, doesn`t believe in love; his philosophy is simple: No love, no commitments = No disappointments. He works hard for 11 months and takes a month`s break from all the work related commitments. Cute violinist Kayalvizhi alias Kayal (Hansika Motwani) believes in true love and is highly fascinated with Indian culture. Kayal`s father Rajasekhar (Suman) runs a small detective agency in France and Kayal often reads her father`s case files for interesting stories. One day, Rajasekhar gets a new client (Sonu Gates) who wants to know about his girlfriend`s mystery man. After a brief investigation, Rajasekhar finds that his client`s girl friend is dating Kamal. Sonu gets angry and decides to kill his girlfriend and Kamal.
Vishu and Ramu are a pair of Indian twins living in America with their father, Rajamani. When Madhumita (Aishwarya Rai) and her brother come to America to get medical treatment for their ailing grandmother, Vishu and Ramu end up meeting them at the airport. Vishu falls in love with Madhumita, and the couple has everyone’s blessing, except for Rajamani, who is estranged from his own twin brother. He only wants his sons to marry twin sisters, so Madhumita pretends to have a twin in order to please him. As Madhumita puts on a charade by creating Vaishnavi, all goes well, until Ramu falls in love with Vaishnavi. Now the truth must come out, before Madhumita has to marry both of Rajamani’s twin sons.
A youthful love story set in the city of love Paris by ace film maker Aditya Chopra. Ranveer Singh plays as Dharam Gulati a Indian who comes from India to France. Vaani Kapoor plays an indian girl who lives in France. When they meet each other, they decide to date but only on one condition which is to never fall in love each other.