Chunni and Munni are twin sisters, played by Shweta Basu Prasad. Chunni is the prankster while Munni is the docile and well behaved one. Chunni usually impersonates her sister to get her way, fooling people in the bargain. Her friend Mugal-e-azam is always there by her side joining in the fun. The village where they stay has a haunted mansion deep in the woods where no one dares to enter. There is a legend that anyone who enters the mansion turns into an animal and comes out. One day the local butcher who has had enough of Chunni’s pranks looses his temper and chases Munni, thinking she is Chunni into the haunted mansion.
Chunni on hearing this is adevastated and starts to howl. She goes to the village people for help but knowing her prankster nature, no one helps her. Left with no choice, Chunni decides to enter the mansion herself to save her sister. She comes face to face with the lady called Makdee who is supposed to be a witch. Chunni later learns that she is not a witch but a conwoman who wants treasure and abducts children to help her dig for it. Chunni reaveals the truth about Makdee to the villagers and she is beaten thus making Chunni the new hero of the village. The movie is written, directed and produced by Vishal Bhardwaj.