Trishul

All is well with the world for Shanti, a self-respecting middle-class secretary, when she falls in love with Raj, an engineer in a construction company. But Raj's mother has bigger ambition for him. Raj's boss Seth Deendayal expresses his desire to get his daughter, Kamini, married to him and make him a partner. Raj's mother is jublient at the opportunity. She convinces her son to agree to the proposal. That changes life for Shanti. Shanti leaves the city and endures many hardships to bring up her illegitimate son Vijay. She brings him up to be a strong and confident man. She confides her life story to him. After Shanti's death Vijay goes in search of the man who betrayed his mom for the riches. That man is now a millionaire and owner of a very big construction company in Delhi. Vijay is still a poor guy with nothing but self-confidence and his mom's blessings. A great movie unfolds about Vijay's struggle to gain a foothold in the city and how he makes his presence known to his father. Sanjeev Kumar and Amitabh Bachchan present sterling performance as father and son. The battle is not only of money but also of minds. The dialogues are simply superb. Shashi Kapoor, Hema Malini, Poonam Dillon and Sachin provide delightful support. Rakhee is very good as a level-minded intelligent secretary. One must see the movie to find out how Vijay faces all challenges thrown in by R.K. Gupta and how he reveals himself to his step-family and to his father. Although the film has five lengthy songs, the serious drama and action is not lost. Amitabh yet again reprises his role of angry young man successfully.

Trishul (Devanagari: त्रिशूल) is an Indian Hindi film directed by Yash Chopra and produced by Gulshan Rai in 1978. Music is by Khayyam and it is written by Salim-Javed and the lyrics are by Sahir Ludhianvi. The movie was a Super Hit at the box-office and one of the top grossers of 1978, along with Muqaddar Ka Sikander and Don. .

Source: Wikipedia