Nagraj (Deepankar Dey) sends John to steal a rare Diamond worth crores from the museum. John betrays Nagraj and runs away with Diamond, but is killed by Ronnie, who leaves the Diamond with a taxi driver Yadav Das. Therefore Yadav is jailed in John's murder case. His daughter Madhuri (Koel Mullick) disguises herself as a boy to run the taxi to support her family. Now Manik and Chand turn up at Madhuri's house and claim to be her long lost uncles from Africa. Madhuri is in love with Rahul, a Nagraj's henchman. As the Diamond is the prime attraction, everyone wants its possession. In the climax, Manik and Chand rescue Rahul, Madhuri and Madhabi from Nagraj and the police arrest Nagraj.