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.