Vijayan has been working as a waiter at the Ammachi hotel in Pettah, Thiruvananthapuram, for the past 14 years. For the past couple of years, he is a regular user of a contraption that has come up near his eatery. Not only that, he evangelises to the many who frequent his eating joint to check it out as well. What Vijayan raves about is a basic necessity that many of us take for granted and surely cannot do without. But for many of his regular customers, such as taxi driver Sivadasan, head loader Mohan, tea stall worker Thulaseedharan and fish-vendor Rafeeque, who frequent the Pettah market, it is no less than a boon.