Shyam (Krishna), a member of Bhayankar's gang, steals a set of rare Paritala diamonds from a museum and hides them in a ceiling fan in his hotel room.
Meanwhile, Gopi (also played by Krishna), a rickshaw puller struggling to make ends meet, encounters Syam, who offers him ₹50,000 to impersonate him for a month.
Simultaneously, a scientist Kailasnath (P. J. Sarma) and his assistant Geeta (Vijaya Nirmala) develop a formula to strengthen military men, which becomes a target for the criminals.
Key sequences include a museum heist, Gopi's escape from gang dens, and a climactic fight on moving train compartments.
[4] The film's soundtrack, composed by Satyam, featured lyrics by noted writers including C. Narayana Reddy, Dasarathi, and Arudra.
[4] Krishna's son, Mahesh Babu, starred in Takkari Donga (2002), a Western film that honours the 1969 original through its title, though the plots differ.