‘Achha toh hum chalte hain’—it’s the songs that stuck around in the 1970 film Aan Milo Sajna.
A widow refuses to bequeath her wealth to her greedy son. The son schemes using his fiancée to get hold of the inheritance, but things don't happen as planned.
A wealthy widow refuses to leave anything to her selfish son. In order to win her affection, he introduces her to his fiancee, Deepali, who is a girl he hires to play the part.