When it’s discovered that four prominent members of the community are crooks and black marketeers, young Akash (Rajesh Khanna) — posing as an expatriate smuggler — teams with his girlfriend, Chanda (Mumtaz), to expose them. But to nail the quartet — a tradesman, a doctor and a builder, all led by a wealthy industrialist (Madan Puri) — Akash must get them to confess their misdeeds while Chanda surreptitiously captures everything on film.