SEQUENCE: STORYBOARD
1 Scene begins empty
2 Prouns fall (from nowhere) onto the platforms. Maybe some miss.
3 They writhe around on the platforms, sometimes flexing or jumping.
4 They jump off of the platforms and onto the floor. Some have died out, maybe some more have spawned.
5 Eventually there are enough of theem to mobilize / organize and make their way up the stairs. Movements in sync. Arranged into a grid / march.