A spunky and independent, 75 year old Naani is on her way back home from her daily morning walk when she sees the face of a little girl peeping nervously from a 3rd floor window of a flat belonging to a childless couple. Her curiosity is aroused and she starts looking for clues and unknowingly gets drawn into what seems to be a murder mystery. It’s up to Naani to solve the case with the help of her dog Bruno and her two grandchildren.