first they show hiten dancing as karan with rakshanda n gauri on the track from devdas silsila ye chahat ka where R & G r dancing with diyas in their hands n later a diya falls from R's hands i suppose n then they show this huge fire effect n shweta is seen in a red saree with her hair open n she in really having angry expressions on her face as she is doing tandav ( a form of dance which is said was done by lord shiva in anger )