Complex sentence: Zafar Khan, wants to convince Salma to marry him but Salma refuses, due to this Zafar floods the region in which Salma lives in, killing her father, injuring Aslam and Salma causing her to lose her memory.
Split into simpler sentences: Zafar Khan, wants to convince Salma to marry him but Salma refuses. Zafar plots his revenge by flooding the region in which Salma lives in, killing her father, injuring Aslam and Salma, causing her to lose her memory.