Patalghar

Patalghar Bengali The Underground Chamber is a Bengali science fiction film based on the story of same name by Shirshendu Mukhopadhyay and directed by Abhijit Chaudhuri.

150 years later i.e. in the present day Dr. Bhootnath Nondy finds Aghor Sens diary mentioning this device. Bhootnath deciphers the diary at a science seminar announcing his plea to search for it. Begum, a gang leader, sends her goons after Bhootnath to get that machine. Aghar Sens device is in his laboratory Patalghar. To reach there, one must solve the mysterious rhymes mentioned in the diary. Suddenly foreigners wanting to buy houses assail Nischintipur. At this juncture, Begum and Bhootnath work together in search of the machine.Kartik, a very intelligent amp brave boy, lives with his uncle Mama Subuddhi. A lawyer reports to them that Kartik is the only legal heir of Aghor Sens laboratory at Nischintipur. Thus the duo reached there. Begum asks them to sell their house but they bluntly refuse. Bhootnath develops a friendship with Karthik. ........

Source: Wikipedia