Lahu Ke Do Rang

The review as given in Ultramovie parlour website reproduced:

Shamshir Singh who has deserted the British Army and joined Azad Hind Fouj, is given shelter from the pursuing Britishers in Hong Kong by Suzy, a local girl, with whom he falls in love. After six months he has to return to India and when he finds Suzy pregnant he marries her, promising to come back after independence to fetch her and their child. In India, he confides to his wife Laju about Suzy and the child. However, while looting a British Bank, he is betrayed by his comrade Shankar who tries to flee with the looted gold but he in turn is duped by his accomplice Mac who gets himself arrested after secretly dumping the gold in a lake. After independence, while Suzy with her son awaits the return of Shamshir Singh to Hong Kong, Lajus son Raj grows up to become a police officer. Raj follows Mac on his release from jail which leads him to his fathers killer Shankar, now known as Devidayal. Raj finds that the diver brought by Devidayal from Hong Kong for salvaging gold from the lake, is actually the son of Suzy i.e. his stepbrother. While investigating Devidayals activities, Raj comes into contact and falls in love with Roma-Devi, girl-owner of a Tea Estate in Darjeeling, who was caught in the web of Devidayal. Does Raj meet his brother? does Devidayal succeed in unearthing gold? what happens to Suzy, Roma-Devi and others?