Chehraa is a complicated love story of a young girl, who has a troubled past.Megha (Bipasha Basu) is a college student, in love with her classmate Aakash (Dino Morea). One day, Megha disappears from college for the spectacular task of killing her father to save her mentally challenged mother.
Meanwhile, Aakash becomes a psychiatrist. Reena (Preeti Jhangiani), another psychiatrist, is a colleague in the same hospital.
Megha returns after five years, as a patient, and Aakash and Reena are shocked to see her. Megha is married to Chandranath Diwan (Irrfan Khan), a very rich drug addict. Megha claims she gets threatening calls and that somebody is trying to kill her.