Gunahon Ka Faisla is an action movie. It is based on crime . Chowdhary , Danny, Gulshan Grover, Prem Chopra & Ranjeet are bandits who have commited heinous crimes like rape,murders, robbery. Dimple Kapadia plays a double role as Durga, the avenging bandit & Shannu as a nautch girl. Durga's father was destroyed by looting of bandits,and a pimp Shakti Kapoor took advantage of the situation, selling her twin sister Shannu to Aruna Irani(Chandabai), who runs a brothel. She was rescued as a child by the kind bandit Pran who raised her. Her childhood friends are Birju (Shatrughan Sinha),another orphan adopted by an old villager, and Chunkey Pandey,who too lost his rich businessman father to be adopted by a poor policeman.One oldman adopts them boys name Birju, he loves his siter, his favourite word is 100 rabdi. Chunkey Pandey's dad is a businessman & also he is shot dead & the Chunkey Pandey(Sheru Dada) adopted by Dinu's wife in the police station. Days passess all childrens grew up. Chowdhary they came to the city as a good businessman & started selling drugs. Truck driver Birju is a honest man. HE felt fishy about Chowdhary so he takes the truck to police station for checking chowdhary's comes to know & kidnaps Birju's sister. To release his sister, Birju has to brings those dakkus who is destroying their truck full of drug boxes. Birju meets Pran & Durga. Birju takes Pran ,police comes to know about Chowdhary's & seals their house. In anger Chowdhary comes to Birju's house & rapes his sister , she dies. Other side Birju comes to know that the oldman is not his father, Pran is his father they meet & hug each other. They both go to their house where they see Birju's sister dead. Other side Shanno asks help to Sheru dada but he refuses. Chandabai sells Shanno to chowdhary in 10 lakhs. So they kidnap her. To save Shanno, Sheru dada comes to take revenge Birju, Durga & Pran comes they fight with Chowdharys. The chowdhary in fight they die. HOw the family reunits. HOw the crime finishes & how the heroes did the chowdharys Gunahon Ka Faisla is shown in this movie.