Justin Timberlake is back on the big screen in sci-fi thriller, "In Time".<br/> Set in the future it's about a world where time is the currency.<br/> People stop aging at 25 - but in order to stay alive they need to keep earning time.<br/> SOUNDBITE: Justin Timberlake, actor, saying (English):<br/> "The script, when I read it, I just found it to be very provocative, and you know, it made me ask a lot of questions about myself, some of which I still haven't come up with the answers for, but I like that, I like when a movie does that."<br/> The inhabitants of the movie's world are segregated by 'time zones' according to their wealth - meaning the rich live longer while the poor die young<br/> Justin plays Will Salas a guy from the wrong side of time who ends up inheriting a windfall of time.<br/> He's clearly not the only famous face to watch out for - his partner in crime is played by Amanda Seyfried.<br/> Despite being from the opposite wealth spectrum to Will they end up teaming up trying to help those less fortunate.<br/> SOUNDBITE: Amanda Seyfried, actress, saying (English):<br/> "The concept is pretty extreme and it's hard to take that idea and actually ground it a point where you can actually relate to it, and make it relevant to our society, so I just thought, like, it was seamless, the script was seamless. And Andrew Niccol was behind it, so it seemed like, seemed like the right thing to do."<br/> Directed by Andrew Niccol, the action-packed, time-bending thriller is out in the US now and the UK next week.<br/> Sarah Mills, Reuters