Rohan Khanna (Akshaye Khanna), an unemployed Indian, decides to go abroad to make money. He lands up in New York but as he doesn't have a stable job, he stays with Indian cab drivers who treat him as family. He then meets Pooja (Aishwarya Rai) who has left her brother's house because he wants to forcibly marry her off to his boss, who is a divorcee. Pooja loves Rohan but he is definite that he wants to stay in America at any cost. When he meets Loveleen (Suman Ranganathan), a rich spoilt kid with money to throw, he decides to marry her...... Rishi Kapoor's maiden directoral venture, Aa Ab Laut Chalen takes a look at the life of Indians who step out of India in search of greener pastures. Rajesh Khanna puts in a special appearance as Akshaye Khanna's father.