Dosh is the story of rich and respectable man known as Vikram Chopra. He has two sons, Vishant and Gaurav. The elder son Vishant is marreid to Priyanka. Vishant is always busy with his business and friends and neglest the feelings of his wife. Gaurav on the other hand tries to take advantage of this situation and tries to come close to Priyanka, much to her dislike. Meanwhile the Chopra family are devasted when Gaurav gets murdered. Inspector Om is looking into Gaurav Chopra's murder case. While investigating he finds out that Priyanka was a lover of Gaurav before marrying Vishant. This news comes as a shock to the whole Chopra family but till now there is no trace of the killer who murdered Gaurav.