Suhaag (1994)

Ajay and Raj are best friends studying in the same college. Pooja and Madhu are their respective girlfriends. Raj is from a rich family. He stays with his mamaji as his father lives in another town. Ajay lives with his widowed Mother and is poor economically. Raj treats Ajay's mother as his own mother and they share a brotherly relationship. 

One day Ajay is aghast to know that his mother is not a widow but only pretending to be one. He confronts her with accusations. The mother breaks down and reveals that his father is alive and is in jail. She tells him that his father Ravi Malhotra was an honest Doctor working at the Rai Bahadur Hospital in a small town. One day he came to know that Rai Bahadur and some other Doctors at the Hospital were involved in human organs smuggling and that the Hospital served only as front for their misdeeds. He threatened to unveil the truth to the world. Rai Bahadui used his position to turn the tables on him and framed him for the crime instead. He was sentenced to life imprisonment. As his father did not want to spoil Ajay's future and didn't want him to be known as a criminals son, he asked Ajay's mother to leave the town and live elsewhere as a widow and made her promise that she would never tell Ajay that his father is alive and is in prison. 

On knowing the truth Ajay along with Raj goes to that town to fight Rai Bahadur and to release his father. In the course of their investigation it is revealed that Raj's father is also a key member of the Rai Bahadur clan and was involved in the framing of Ajay's father. Raj confronts his father who relents and agrees to expose the truth in court and help release Ajay's father. Rai Bahadur counter attacks by killing Raj's father before he could go to court. How Ajay and Raj then fight Rai Bahadur and his gang and how they release Ajay's father from Jail and bring Justice forms the climax.

(From the official press booklet)