Dak Bangla is a 1987 Hindi horror film starring Marc Zuber, Rajan Sippy and Swapna. Ajay gets hired as the manager of a dak bungalow. He arrives there with his wife Vaishali. Ajay's niece, Sapna, her boyfriend Raj and some other friends arrive at the dak bungalow to spend their vacation. Soon, Sapna begins to have nightmares and other members experience paranormal activities inside the house. What is the reason behind Sapna’a nightmares? Are the nightmares and the paranormal activities connected?