It’s the year 2075. After decades of uninhibited pollution, the atmosphere above ground has become toxic to humans. Just a few minutes of exposure can cause painful boils and sickness. Strangely enough, plants haven’t just survived — they’ve thrived. Vines snake across crumbling skyscrapers, and trees have broken through roads and sidewalks, slowly taking over what’s left of the old world. With the surface no longer safe, humanity has taken refuge underground, living in a primitive way like their forefathers once did.

Still, people long for the thrills of the past. To recapture something of the world they lost, a group of former engineers came together to build a simulator. Using hologram technology that became common during their last few carefree years, they recreated the experience of riding the old rollercoaster Wild Mouse. The rider's minds are uploaded into a virtual car that rides the track. It’s not quite the real thing, but for a few minutes, it feels like they’re back under the open sky, screaming through tight turns and sudden drops. And for most, that’s enough.