Namak Halaal [1982, comedy, DVD5]

Bhimsingh dies while saving life of his employer Savitri, who promises him to take care of his employer's son Raja. Everyone, including her father-in-law Dashrath Singh, thinks Savitri killed her husband and employer for money. Savitri hands her son Arjun to her father-in-law and goes to take care of Raja. Arjun grows up a simple man dependent on his grandfather. His friend Bahirav takes him to city to work in a five-star hotel owned by Raja, where meets and falls in love with Poonam. Arjun and Raja become good friends. Girdhar Singh and his son Ranjeet want to kill Raja as Girdhar killed his father, but all their attempts fail thanks to Arjun. Raja doubts that his mother is behind all this. Ranjeet and Girdhar now hire Nisha to kill Raja.