Saajan Fernandes (Irrfan Khan) is a widower who is about to retire from his job as an accountant. Ila (Nimrat Kaur) is a young wife seeking her husband’s (Nakul Vaid) attention and looking for ways to put romance back into her marriage, one of which is to cook delicious food for him. Through a rare mix-up of the complicated food delivery system that picks up and delivers lunches from restaurants or homes to people at work of Mumbai, the lunchbox Ila prepares for her husband gets delivered, instead, to Saajan. Ila eventually realizes the mistake and with the advice of her neighbor aunt (Bharti Achrekar – voice only) living in the apartment above her, writes a letter to Saajan about the mix up and places it in the lunchbox (along with her husband’s favorite meal) the next day.