Karan [Sonu Sood] loves Sneha [Tanushree Dutta], but is too much of an introvert and just doesn't express his feelings to her. Although Karan's feelings are evident to many, he is content in just seeing Sneha smile and never gathers the courage to let her know his true feelings.

Vicky [Emraan Hashmi] is Karan's childhood friend. The opposite of Karan, Vicky is an extrovert and a notorious flirt. All three lives change when Vicky joins Karan and Sneha in college and Sneha is drawn towards Vicky.

Fearing Vicky's intentions, Karan tries to talk him out of his relationship with Sneha, but Vicky assures him that he is in love with Sneha. Karan feels he has lost the only woman he has ever loved, but knows he cannot do anything about it.

The closeness between Vicky and Sneha cross all boundaries and just as everything seemed set between the two, one night shatters them both. Sneha turns to Karan for support. Over time, Karan finally musters the courage to propose to Sneha.

After Sneha and Karan are engaged, Vicky re-enters their lives. But that one night changes their lives forever.