During their four years of married life Tanu (Kangana Ranaut) and Manu (Madhavan) have changed causing them to constantly fight with each other. Manu decides to get divorced. An upset Tanu comes back to her hometown and meets her ex-boyfriend Raja (Jimmy Shergill). Meanwhile Manu reaches Delhi. He sees the very 'sporty' Kusum (Kangana Ranaut), who happens to be a state level athlete and looks just like Tanu. Manu falls in love with her and ultimately convinces her and her relatives for marriage, despite being a 'second hand' man. Seeing her 'husband' about to tie the knot with Kusum, Tanu lands up with Raja at the venue. Will Tanu realise her mistakes and be able to stop Manu from marrying Kusum? Does Manu actually love Tanu or Kusum?