Father and Daughter - one of life's most beautiful relationships. Happy moments, treasured memories, sworn secrets, shared sorrows - right from the arrival of the little princess to the time she moves to her own kingdom... and even more. But what of the father's greatest fear - the man in his daughter's life? Who is to draw the line between care and over protection? Dr. Malhotra (Amitabh Bachchan) believes he is simply a protective parent while his daughter Ria (Bipasha Basu) believes he's simply possessive. All is well till Aryan (John Abraham) walks in their life. Aryan - the epitome of all the values that Ria's father abhors, wild, unpredictable, overpowering obsessive. But he is just what Ria's been waiting for intriguing, magnetic and sensitive. Aryan has only one mission in life - being in love with Ria. Nothing else matters. Soon begins a war of ideologies, desires, wits. How far can Dr. Malhotra go to convince his only child that she's headed towards disaster? Can he save his family?