I just saw this today. Excellent film. The story really messes with your head.
You think it's about a sex club that the shy and dorky McGreggor gets enmeshed in when he accidentally takes Jackson's phone.
Meanwhile, Hugh Jackman sort of takes him under his wing because Jackman plays that guy who gets all the girls - you know the type.
But then you learn the real story as McGreggor does. And it's violently deadly, too.
This movie is not what it seems and its surprising twists are intensely thrilling.