V.D. Puranik

Raja Saheb (Ashok Kumar) is a rich man, strict father to sons Virendra (Sunil Dutt) and Mahendra. One day, Mahendra has a big fight with his father and dies of shock afterwards. Virendra leaves home and falls in bad company with Pran. Later, Virendra falls in love with a poor girl (Nutan), eventually deciding to marry her. At home, a lonely Raja Saheb falls ill. When Virendra tells his father about his love, his father reveals his own past: He was in love with a poor girl, who died leaving a daughter (Padmini) behind, who dances on the roads to earn a living. Virendra decides to bring his sister home.

A man, after marrying an heiress, plots his wife's murder and deserts his daughter, only to be shocked when his estranged daughter returns home years later.

When Criminal Investigating Officer, Amarnath is murdered during the line of duty; Intelligence suspect it is the handiwork of foreign criminals who wants to destroy India with the help of some Indian traitors thus secret agent, Gopal is sent down to investigate. He meets and fall in love with Sunita who then introduces him to her dad, Damodar. Gopal also find out that Damodar is a mere pawn in the hands of the same criminals he is looking for and must continue his investigation to reach the mastermind.