The film, set in Mumbai, revolves around a mistaken delivery by the Dabbawalas (lunchbox service) of Mumbai, which leads to a relationship between Saajan, a lonely widower close to retirement, and Ila, an unhappy housewife, as they start exchanging notes through the daily lunchbox.
The Lunchbox
A mistaken delivery in Mumbai's famously efficient lunchbox delivery system connects a young housewife to an older man in the dusk of his life as they build a fantasy world together through notes in the lunchbox.