Atithi (meaning) guest is always an unwelcome specie, especially when they come to stay overnight and the stay then goes into weeks and months. This movie is about one such Atithi. However, since, a guest is like God, we have to treat them right, right? That's the Indian hospitality. And it is this very hospitality that the comedy is based upon.
Ajay Devgan and Konkona Sen Sharma are happily married to each other with a six-year-old son, when an unwelcome, unannounced guest, who on arrival in the building lobby itself sets up a commotion by slapping the watchman, rocks their world. Guest (Paresh Rawal) is asking for Pappu. He has a flat No., which matches with where Ajay resides. So Ajay who is Puneet in the film becomes Pappu. Rawal enters their home and makes it his own. Farts to his liking, dries his langot in all corners of the house, harasses the maid, and invites his friends over. So much so that the couple have to move out for a few days into a hotel to get some respite.
Rawal annoys so much that you feel for the couple and along with them want to kick him out of their house. But there are a few laughs left and Rawal is not yet done with his unintentional humour, which now has endeared him to all the society members.
It's a Paresh Rawal show all the way with Ajay and Konkona providing good support. Rawal meeting Sholay's Kaalia (Viju Khote) on the sets is one hilarious track 'Kitney aadmi the,' he keeps asking kaalia, on the Muhurat of the set. His reply causes and out-of-turn explosion blowing a Rs 50 Lakh set before the Muhurat shot!
The chart topping track from OMKARA, Beedi jalai le is converted into a bhajan, sung by Rawal, which has the society members in a trance.
And though the couple want to see the back of their guest who has overstayed his time, when the time comes for him to leave, they actually want him to stay!