in this film, the time is the only currency. Every person is born with 1 year lifetime which is recorded on a digital clock counting down the left arm. And humanity stops aging when they are 25. From here, in order to live longer, they must make more for themselves. Time used in all daily work: buy coffee, pay utility bills, rent, bus tickets, ... time can also be used for donations, distributed, alms for the poor. So It also contains begging scene, robberies, gambling, even as commodity price inflation.