Hum Kaun Hai? tells the story of two lovers, Prem (Salman Khan) and Nisha (Madhuri Dixit). Their older siblings, Rajesh and Pooja get married. After Pooja has her baby, the elders decide to get Prem married with a girl like Pooja. Prem and Nisha slowly fall in love with each other. Prem tells his sister-in-law...Wikipedia