Lahu Ke Do Rang is a 1979 Hindi movie directed by Mahesh Bhatt. The film stars Vinod Khanna, Helen, Danny Denzongpa, Shabana Azmi, Ranjeet, and Prema Narayan. The music and lyrics for the film is by Bappi Lahiri and Faruk Kaiser respectively.
Shamsher Singh played by Vinod Khanna is part of the Indian army led by Subhas Chandra Bose to fight British out of India. With British on his back to catch him in Hong Kong, he is rescued and helped by Suzy played by Helen. Falling in love with him, Suzy becomes pregnant with Shamshers baby. But she lets Shamsher go back to India as he is on a greater mission asking him to return to take her and their baby along with him to India. Back in India Shamsher is already married to Ladjo played by Indrani Mukherjee. The two of them have a son named Raj.Shamshers friend Shankar played by Ranjeet betrays them all with help of Mac played by Mac Mohan and kills Shamsher. But Mac also betrays Shankar and hides the looted gold somewhere without telling it to Shankar. ........
Source: Wikipedia