Yesterday in Los Angeles Amanda Seyfried and Justin Timberlake filmed an action scene involving a prop gun for their upcoming thriller "Now."

The film centers on a world where time has become the ultimate currency. People stop aging at 25, but there's a catch: they're genetically-engineered to live only one more year, unless they can buy their way out of it.

The rich "earn" decades at a time (remaining at age 25), becoming essentially immortal, while the rest beg, borrow or steal enough hours to make it through the day.

When a man from the wrong side of the tracks is falsely accused of murder, he is forced to go on the run with a beautiful hostage. Living minute to minute, the duo's love becomes a powerful tool in their war against the system.

Click for more great Amanda Seyfried pictures: