Ek Tukro Chand (2001)

When the brother of the President of Murundi is kidnapped, and a lunar stone vanishes from the Indian Museum in Kolkata, CBI Officer Narendra Verma turns to Kakababu for assistance. Following Kakababu’s advice, Kakababu, Sontu, and Jojo travel to Palamau Forest Bunglow to investigate Major Thakur Singh, the suspected kidnapper. They uncover a scheme involving a fake Bubumba. Their investigation then leads them to Gangtok, where they locate the kidnapped President's brother and also discover the thief who stole the lunar stone collected by U.S. astronauts.