Previously known as Monk On Fire, Once Upon A Time In Vietnam has been a passion project of Nguyen's for years. And given the story revolves around supernaturally powered, motorbike riding, martial arts monks, there's a lot of things to feel passionate about.
Nguyen is now just days away from completing principal photography and has released a number of behind the scenes shots via the film's Facebook page. Check out our favorites in the gallery below, and remember that you can click them to enlarge.