This is the story of Sid (Ranbir Kapoor), rich, lazy, unmotivated slacker from Mumbai whose life undergoes a series of changes after taking his final year college exams. Sid's world is rich, breezy, carefree, and without any true responsibilities. The most important elements in his life are his friends, his camera, his car, and his PS3.
Sid thrives around his two best friends, Rishi (Namit Das) and Laxmi(Shikha Talsania), very rarely communicates with his mother Sarita (Supriya Pathak) and takes his father Ram Mehra (Anupam Kher), and all his hard earned wealth for granted. Despite all these traits, Sid is an honest boy; sweet, funny, and above all, a good friend. Aisha Bannerjee (Konkona Sen Sharma), an aspiring writer from Kolkata, learns this soon enough when her path crosses with Sid's on her first day in Mumbai. Ambitious, well-read, and driven, Aisha has come to Mumbai to realize her dreams as a writer. Despite their contrasting personalities, Sid becomes Aisha's first friend in the city.
As Aisha sets up her life in Mumbai, with the help of Sid and his gang, Sid allows for time to fly by over long drives, parties that stretch well into dawn, and endless hours doing absolutely nothing. But summer comes along and leaves Sid's life completely changed. An incident forces Sid to move in with Aisha. Reluctantly, he even starts realising his responsibilities. But proximity does not translate into love for Sid and Aisha. The differences in their personalities that brought Sid and Ayesha closer, emerge as the biggest challenge in their relationship. And Sid's search for his own identity keeps influencing his ever-changing equation with Aisha.
Cast
* Ranbir Kapoor ... Sidharth "Sid" Mehra
* Konkona Sen Sharma ... Aisha Bannerjee
* Anupam Kher ... Ram Mehra (Sid's Father)
* Supriya Pathak ... Sarita Mehra (Sid's Mother)
* Jason Mehta ... Chotu (House-help at Sid's place)
* Namit Das ... Rishi
* Shikha Talsania ... Laxmi
* Rahul Khanna ... Kabir
* Kashmira Shah ... Sonia
