The small time agency Danny Detective Inc. gets a case. Danny is killed. His secretary Subrata Sharma is forced to get involved.
Subrata is forced to travel to Dooars. A reputed tea estate owner employs him to find out the killer of his son-in-law. He is attacked.
Subrata gets involved with the local underworld and falls for the tea estate owner's daughter, Pamela. He is kidnapped.
The underworld kidnaps Subrata. Subrata exposes them. An elderly local, Shankar, dies trying to give Subrata an important evidence of the case.
Subrata returns to the owner of the tea estate to reveal the truth and he finally catches the killer of his boss, Danny. He takes over the agency.