Aadmi is the story of an honest man Vijay and his fight against corruption and country's traitors as he is trapped and bailed for a crime (murder of his own parents and brother), which he never committed. Vijay lives a middle-classed lifestyle in Bombay along with dad, Mohanlal, mom, Sharda, and a younger brother, Raju. His father and brother manage a restaurant while Vijay works as a supervisor at the Ordnance Factory that manufacturers RDX for the Government of India and also moonlights as a self-defense instructor.
Vijay meets with wealthy Rekha, the only daughter of Advocate Saxena, and both fall in love with each other. Their respective parents meet and arrange their marriage. Before even the engagement could take place, Vijay is arrested by the Police and charged with killing his parents and brother, tried in Court, found guilty, and sentenced to five years in jail. On his first day behind bars, he is approached by Inspector Yeshwant Deshmukh, who asks him to cooperate and abduct Deepak, the son of an underworld don, and if he does so, he will only aid the Police but his crime will be pardoned and he will be released. He comes out of Jail, to destroy his enemies