namak haraamSomnath (Somu) lives in a shanty house in a Delhi slum with his widowed mom, and unmarried sister, Sarla. He is friendly with Calcutta-based wealthy Vikram (Vicky) Maharaj. When Vicky's dad, Damodar, has a heart attack and is advised to take bed-rest for two months, Vicky fills in his father's shoes, has a confrontation with a senior employee and union leader, Bipinlal Pandey, which results in a strike. His father intervenes, asks Vicky to apologize to Bipinlal, which Vicky does, and everything returns to normal. Vicky confides about his humiliation with Somu, and both conspire to teach Bipinlal a lesson. As a result, Somu accompanies Vicky to Calcutta, gets a job as a laborer in his mill, befriends his fellow-workers, gets some monetary relief to injured workers, amongst other benefits, is elected as the union leader replacing Bipinlal. With Somu as the union leader and Vicky as the boss there is no stopping these two....
