It's a regular day at Gulmohar Complex. Spunky, independent, 72-year-old Naani is on her way back home from her daily morning walk. Suddenly her eye catches the face of a little girl peeping nervously from a 3rd floor window. The flat belongs to a newly arrived childless couple called Yadavs.

The girl hides away quickly. Naani's intrigue about the little girl leads her to a possible murder. Naani finds herself in the middle of a mystery where some people will come to her aid, some will be indifferent and some will prove to be dangerous. When the CID dismisses Naani's story due to lack of hard evidence, she transforms into a detective.

She uses her home-spun common-sense and logic and she carries out her investigation in classic "whodunit" style. Of course, Naani's rather eccentric methods of investigation lead to many quirky and humorous incidents. Her unusual team of deputies consists of her two inquisitive little grandchildren Anjali and Nakul, her divorced daughter Priya Sinha and a couple of teenagers Rohan and Neeti.

The search for one lost little girl leads Naani & Co. to a racket where the stakes are high, the criminals are ruthless, and their leader is powerful. Once Naani gets too close to their trail, she endangers herself. She finds herself sharing the same plight as the little girl she had seen in the window. Naani's team of amateur detectives get together and finally win the day with a little help from the CID.At the heart of this story is the terrified, kidnapped little girl. Her plight acts as a reminder to the audience that Naani's mission was a race against time. And yet, this adventure has a positive effect on all the characters that get involved. Bridges are built, relationships blossom, lessons are learnt.

The two squabbling teenagers fall in love, there is a whiff of a romance between Naani's divorced daughter and the dashing CID Inspector. Old Mr. Pal finds a renewed energy and interest in life. And of course, a lost 4-year-old little girl Neelima Daamle is finally re-united with her mother.The Yadavs are sent to jail for the crime of human trafficking.

• Ava Mukherjee as Naani
• Simran Singh as Anjali Sinha
• Amit Verma as Rohan Malhotra
• Shweta Gulati as Neeti Tipnis
• Ankur Nayyar as CID Inspector Bhatia
• Zain Khan as Nakun Somesh Dutt
• Saili Shettye as Little Kidnapped Girl Neelima Daamle
• Hemu Adhikari as Mahesh Pal
• Atul Parchure as Petook
• Hemant Pandey as Tattu
• Sanjeeva Vatsa as Raj Yadav
• Shubhangi Gokhale as Madhu Pal
• Jaywant Wadkar as Goonda Pakya
• Sanjay Singh as Goonda Choti
• Amrita Raichand as Priya Sinha
• Mahru Sheikh as Tara
• Mohit Chauhan

Through the film didn't recruit much popular film stars, it became a Box Office flop with ?11.02 Lakhs

worldwide. It was released in Hindi, English, Tamil, Telugu, Kannada, Marathi, Gujrati, Urdu, Bengali & Chinese on 22 May 2009 worldwide.[3] On its first day release in India, it earned ?9.05 million, on its second day it earned ?135.6 million, on its third day it earned ?150 million. On its first week of release it earned around ?391.62 million. On its second week its earning dropped down to around ?210 million, then within third week earning again dropped down to ?165.2 million. After its one month of release, it earned around ?850 million from whole India.[4] The film was also released in United States (where it earned ?6.05 million), China(where it earned ?5.67 million), Pakistan(where it earned ?3.09 million & Bangladesh(where it earned ?1.10 million)