A group of strangers find themselves stranded in a bus station when a torrential storm hits every corner of the globe. Before long, each of them undergoes a startling transformation without Earthly explanation. As paranoia starts to set in and accusations fly, they have to figure out how to save themselves before it’s too late.
It’s basically one long episode of the Twilight Zone, which is about as good of a recommendation I can give. Does get pretty weird at one point, but stick with it. It’s worth it.
It’s got a 95% on Rotten Tomatoes.