Madhu gets ditched by her husband and kids on her birthday which happens to come once in four years, Feb 29. Now Madhu is left with two options, she can either choose to sit at home and sulk, pity herself for the next four years or reinvent her boring, mundane life into an exciting one and take a grip over it.
She eventually decides to enjoy her birthday according to her whims and fancies. It is an unusually fun filled day for her until she meets Raghav, a criminal on the run who is posing as an undercover agent so that he can escape the cops.
Mistaking him for a detective she requests to be a part of one of his cases only for a day, beginning a day-long adventure which changes their lives forever.