Note this: You need to turn into a kiddie while watching a kiddie film. So follow this mantra when you set out to watch a naani solve a mystery, a la Sherlock Holmes and Agatha Christie, in Detective Naani, directed by first-timer Romilla Mukherjee. Detective Naani is tedious and interesting, both. Tedious, because what could've been narrated in 1.30 hours is narrated in 2.15 hours. More on that later!
Interesting, because the mystery element and how it eventually gets solved keeps your eyes wide open. Sure, you might call the goings-on childish, but, hey, don't forget the golden mantra. It's a regular day at Gulmohar Complex. Spunky, independent, 75-year-old Naani [Ava Mukherjee] 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 childless couple.
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 officer [Ankur Nayyar] dismisses Naani's story due to lack of hard evidence, she transforms into a detective. Naani uses her home-spun common sense and logic and carries out her investigation in classic whodunit style.