Life in Chunni's village is all peace and quiet, and great fun. She fools the village with her impersonation of her twin sister, Munni; she has a great friend in Mugale Azam, who does her homework and she also has all the opportunity to vex her masterji (school teacher), Kallu (the village butcher) and her father. There is one small problem, though. In a mansion in the village, said to be haunted, lives the legend of a witch called Makdee (played by Shabana Azmi.) The legend goes that whosoever wanders into the mansion, comes out as an animal! No one in the village dares to enter the mansion. Of course, there is the exception of the schoolteacher, who refuses to believe the existence of a witch and brushes it aside as mere superstition.
Things are going fine for Chunni until the day she decides to rankle Kallu. Kallu frets and fumes and is on the lookout for Chunni - she has, after all, let his hens loose and the butcher cannot take it anymore. When he does corner her, she very smartly dons on the disguise of her sister and re-directs the butcher's chase - towards Munni! Kallu chases Munni, who is terrified and runs into the haunted mansion to save herself from a very angry butcher.
Chunni is hysterical when she runs from pillar to post to gather help, but her credibility is at an all-time low and the entire village refuses to believe her. Except the cops, Ghanta and Banta, who do turn up but a little late. Chunni is already in the haunted house to find her sister.
Chunni is terrified in the mansion - dark passages, a very dark main hall - and a witch! Chunni meets Makdee, and also her sister - but it's not the sister she knows. The wicked witch has turned her into a hen! After Chunni's repeated pleas to the witch to let sister go, the witch strikes a deal - Munni in return for a 100 hens.
Chunni is now confronted with the biggest challenge of her life - 100 hens for the witch, in return for her sister, without the villagers ever getting to know of it.
Does she get Munni back? Or does she fall prey to the evil and cunning of Makdee?