The film is set in the year 2169, a time when people have stopped aging at 25 years old. But one year after their 25th birthday they die if they aren't able to add credit to the time remaining on their lifespan. The story focuses on Will whose mother, Rachel, passes away after her time runs out. Will learns that the elites of the world hoard the time stores for themselves while the poorest are left to fend for themselves or to die without any chance of expanding their time. Because of this gangs spring up which rob people of the time they have in order to live longer. Thus, the upper class has created a wide chasm between the wealthy and the poor which is seemingly impossible to overcome.
Will is given 116 years of time by Henry Hamilton, a man he saves from being robbed of his time by Fortis and his gang. Because of this Will becomes the prime suspect in the police's investigation of Hamilton's death. Rachel ends up dying in Will's arm as her time runs out. Though he had enough to expand her life, she wasn't able to give any time to the bus that would take her home as she had to pay off a loan prior. Unable to convince anyone to give her time, she fails in her attempt to make it to Will and dies before he can save her.
Next, Will finds himself rubbing elbows with the elite of the world in a casino where he very nearly loses his time and life before winning a millennium in time which is quickly taken from him by Raymond, the Timekeeper who believes he killed Hamilton. But Will escapes taking Sylvia, who is the daughter of the wealthiest man in New Greenwich, hostage. The film carries on with Will and Sylvia overcoming obstacle after obstacle which keep them from keeping their own time and finding ways to steal time from the elite and give it to the poor.
In the end, Raymond runs out of time in pursuit of Will and Sylvia, and Will narrowly saves Sylvia's life with only one second remaining on her life clock. Together the duo robs Sylvia's father of a million year time capsule which they distribute to the poorest people, effectively allowing them to quit the jobs they have been destined to (which are owned by the elite who control the time they pay them with). The poor begin to move into New Greenwich as we see Will and Sylvia have teamed up to rob time from the elite and give it to the poor in an effort to crash the system built by their greed.