Waah! Tera Kya Kehna is a romantic comedy drama. The movie revolves around Raj (Govinda), grandson of a renowned businessman, Krishna Oberoi (Shammi Kapoor). Krishna has two sons – Dilip and Ashish, but he is aware that both are after his money. Thus, he decides to leave all his property for Raj. When Dilip and Ashish learn about the same, they decide to team up and so they could turn Krishna against Raj, and make him realise that he is not worthy and competent of his wealth. Things take a turn when Raj’s lookalike, Inspector Banne Khan (also played by Govinda) enters their lives, which creates a lot of chaos and hilarious situations. Banne Khan teams up with Raj to teach his evil uncles a lesson. Will the two succeed in eliminating Raj’s uncle and getting him the wealth that rightfully belongs to him?