A herd of white horses stampedes across the slate rooftops of a nineteenth-century city while a thunderstorm tears the sky open behind them. The camera never breaks: it starts at hoof height on a rooftop ridge, lifts into the air as the herd charges past, drops into a chase behind them, threads between two galloping bodies, climbs above the roof valley, then dives and flies backwards ahead of the leaders to the final leap off the roof edge into open air.