As the title suggests, the show holds a mirror up and shows us the pit falls that modern society has. Often showcasing enhanced technology it shows us the not too distance future and how human nature, with the help of advanced technology, can be warped into something almost evil.
Each episode is a stand-alone story that addresses a different aspects of modern life; my personal favourite being 15 Million Merits.
One of my all-time favorite shows. Every episode makes your brain hurt a little bit. None of the episodes are connected which is part of the reason the show is so great. Very dark and dramatic and a possible look at our future if we're not too careful about how far we let technology go.