Simon Bubumba, the brother of President of the small African state of Murundi, is kidnapped. At the same time a stone from Moon has been stolen from Indian Museum of Kolkata. Kakababu's friend, CBI Officer Narendra Verma seeks help from Kakababu. As per his suggestion Kakababu (Sabyasachi), Sontu (Soham) and his friend Jojo reaches Palamau Forest Bunglow to investigate suspected kidnapper Major Thakur Singh (Mrinal). They outsmart him to find that he is lodging a fake Bubumba. Then they reach Gangtok where they find Bubumba and also finds the thief who had stolen the stone collected from the moon's surface by U.S. Astronauts.
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