Jagga (Ranbir Kapoor) a curious and shy young boy in a quaint little town lives a happy life with his accident-prone father, Bagchi (Saswata Chatterjee). After admitting Jagga into Boarding School, his father suddenly disappears from the scene. Feeling abandoned, Jagga's only contact with his father is a VHS tape that he receives in the mail every year on his birthday. Armed with sharp detective skills, Jagga sets out to solve the mystery of his missing parent. Along the way he finds a partner in Shruti (Katrina Kaif) an accident-prone journalist with her own international criminal case to solve. Using a few tricks he learnt from Bagchi, Jagga and Shruti embark on a mission to uncover details of his father's mysterious life and find themselves embroiled in a worldwide smuggling racket.