Unns...is a story narrated by Natasha (Juhi Babbar), about her close friend Ria (Rituparna Sengupta) who gets married to Rahul (Sanjay Kapoor) on a rebound. Rahul, an ideal husband truly loves his wife. Unfortunately Ria is unable to reciprocate Rahul's love in the same way as he does.

Ria's first love, Rishi (Sudhanshu Pandde) is a advertising Tycoon who she really loved once upon a time. Though Rishi too loved her but, they could not get married.

Succumbing to her consciences, Ria deliberately starts picking up fights with Rahul and one day tells Rahul that she has decided to end her marriage. Rahul is shattered. Natasha's boyfriend Sameer (Aman Verma) who is a lawyer, helps Ria. Natasha understands that Ria cannot get a better husband than Rahul and discourages her from divorce. But Ria is adamant. Rahul himself, a product of a broken family, and the one who probably nursed a desire to keep his family always happy, decides not to let go Ria and wants to save his marriage. Natasha stands against her own boyfriend Sameer as well as Ria and helps Rahul in this process.

This critically acclaimed music album has 6 meaningful and melodious songs sung by versalite singers like Sonu Nigam, Abhijeet, Alka Yagnik, Udit Narayan, Hariharan, Shreya Ghosal and Sunidhi Chavan.

Sanjay Kapoor

Rahul, a small town boy, now working in Mumbai, is a product of a broken family who nursed a desire to keep his wife and family happy as and when he is got married. Strong believer in the Institution of Marriage and family values, he is accosted with a women who marries him on a rebound.

Rituparna Sengupta

Ria has been a very vivacious girl and had once fallen in love with CEO of an advertising company. After breaking off with him, on rebound, she marries a who is very loving and one who could be termed as an ideal husband.

Sudhanshu Pandde

Rishi Rampal is a CEO of an advertising company who impressed by Ria's beauty and innocence unwittingly falls in to love with her. He is able to conceal a certain fact from Ria understanding that if that fact is known to her, she is bound to leave him. However when Ria learns about this she is left with no option but to confront and leave Rishi for good.