Madhuri and Rani (Baby Madhuri) are twin sisters whose parents, Seth Dinanath and Radha, are shot in front of them by their mother's rejected suitor Shivnath (Dalpat). The mother dies and the father is kept prisoner by Shivnath who also kidnaps Rani. Madhuri is found wandering by a rich man Rai Bahadur, who takes her home and adopts her. Several years pass and Madhuri (Fearless Nadia) is enjoying her life in luxury. She has a dog called Gunboat who accompanies her everywhere. She finds out about her parents and sees Rani dance at a nightclub. She vows vengeance and soon the sisters along with two friends (Yakub and Agha) fight their way to the gangster and free their father.
Scientist Ramu and his wife Uma (Nazira) live with their four-year-old son Leher in the jungle where he carries out experiments. He has discovered the elixir of life. Lions attack their house killing him, while his wife goes mad with grief. Ramu’s son, Leher, and their little dog Moti, escape with the help of a half-man, half-ape called Dada (Boman Shroff). Several people arrive in the jungle fifteen years later from the city. One of them is Ramu’s father with his adopted daughter, Leela. Bihari, one of the people in the group wants the formula for his own purpose. The formula was put in a pendant around Leher’s neck by his father before he died. Leher now grown-up and known as Tarzan (John Cawas), has been brought up in the jungle and there are some amusing incidents between Leela and Tarzan, due to his lack of language skills. Tarzan saves Leela from Bihari’s unwanted advances.
