[TOMT] [Movie] A Sci Fi short movie released on youtube about a cube and something in the sky, I believe in first person view

This trailer reminded me of it:

https://www.youtube.com/watch?v=SernjeZIsM8

It was a short film I saw on youtube or vimeo about some guy that was escaping or something with a black cube and I think in the end, it it showed the sky with a vortex and maybe lightening.