Life in Chunni's village is all peace and quiet, and great fun. She fools the villagers including her parents with her impersonation of her twin sister, Munni.

In the village, there is a mansion that is said to be haunted and legend goes that a witch called Makdee (Shabana Azmi) resides there. The legend has it that whosoever wanders into the mansion, comes out as an animal! No one in the village dares to enter the mansion.

Things are going fine for Chunni until the day one of her pranks gets quite out of hand. Chunni, her sister and her friend Mughal-e-azam are constantly at the odds with the local butcher, Kallu (Makarand Deshpande). Once Kallu chases Munni, Chunni's docile twin to the mansion mistaking her for Chunni in a fit of rage. As a result of this, Munni, her docile sister, enters the mansion, where presumably the witch has turned the little girl into a hen. Chunni is hysterical when she discovers this. She runs from pillar to post to get help, but her credibility is at an all-time low and the entire village refuses to believe her, so Chunni finally enters the haunted mansion alone to search for her sister.

In the mansion she comes face to face with the witch, she pleads with the witch to let her poor little sister go, as it was no fault of hers. But the witch asks her to strike a deal. She will turn Munni back into a human only if Chunni can acquire for her hundred hens in exchange.

All of a sudden, Chunni is confronted with the biggest challenge of her life.

Chunni's school master visits the mansion but a small puppy is seen exiting the mansion and people presume the witch has turned him into a puppy. Mughal-e-azam after spotting the puppy realizes it is his pet dog that had entered the mansion and has disappeared ever since. Its then Chunni realises that all this was just a ruse. Makdee is not a witch and she does not really turn humans into animals; she merely locks them up and has some plans of her own. All the people locked up are finally freed and the village finds a new hero in Chunni.

• Shweta Prasad as Chunni/Munni
• Shabana Azmi as Makdee, the witch
• Makrand Deshpande as Kallu, the village butcher
• Daya Shankar Pandey as school teacher
• Aalap Mazgaonkar as Mughal-e-Azam
• Vineet Kumar
• Mohini Mathur as dadi
• Chittaranjan Giri
• Vijay Raj as Chunni/Munni's father
• Shammi Narang as himself (guest appearance)

• The film won the second prize at the Chicago International Children's Film Festival.
• Shweta Prasad won the Indian National Film Award for Best Child Artist for 2003 for her role in the film.