This is based around a weird concept in a futuristic world where the currency everyone lives by is time.
People have a finite amount of time and you must use your accrued time to buy goods and trade, while earning time by working.
Ageing stops at 25 and your longevity
is up to you to manage. If you can't find more time, you have only a year to live.
If you fail to manage your time, you "time out" when your personal clock strikes zero and you are dead. However, if you are born rich and powerful, time is not an issue.
But at the other end of the scale, time is used to keep the underclass poor and dependent on begging and borrowing time from the powerful.