Aman Kapoor (Rahul Bose) is a savvy investment banker whose car breaks down near flora fountain, Mumbai on a stormy night. Its raining heavily and his cell phone dies down on him. He does not have any options other than taking shelter in the lanes of big archaic building and satying awake all night. There he meets a street hooker Chameli (Kareena Kapoor) who preys on him. But Aman is a very clean man and he never indulged in sex with any girl other than his wife. He hates her at first. But as time passes, he realizes the human side of her. Then he observes that she is in a deep trouble. He rescues her from her pimp, goes to jail, shells out thousands of money from ATM. And all this for a hooker with whom he did not have sex.