Chachi 420 is a 1997 Indian Hindi comedy film, co-written, co-produced and directed by Kamal Haasan. The film is a remake of the Tamil film Avvai Shanmughi (1996) which was inspired from the Hollywood film Mrs. Doubtfire (1993). It was the first film directed by Kamal Haasan who also starred in the film playing double roles. The film also starred Tabu, Amrish Puri, Om Puri, Johnny Walker, Paresh Rawal, Rajendranath Zutshi, Ayesha Jhulka, Nassar and Fatima Sana Shaikh.

Plot

Jaiprakash Paswan a.k.a. Jai (Kamal Haasan) and Janki Paswan (Tabu) are fighting a divorce case. Janaki is the only daughter of Durgaprasad Bhardwaj (Amrish Puri), a staunch Hindu Brahmin businessman. Jaiprakash, a Hindu Dusadh, is an assistant dance director in films. The duo fell in love and married against the will of Durgaprasad. However, Janki buckles under the pressure of middle-class life. Other differences crop up between the couple and Janki walks out. The court grants the divorce. Jai is allowed to meet his beloved daughter Bharti (Fatima Sana Shaikh) once a week. But when he sneaks into the Bhardwaj house to steal Bharti, he loses visitation rights.