I think one word that could describe this short film would be "mind-blowing". The concept is not what we usually encounter on mystery and thriller genres.  There's  a tinge of a Twilight Zone idea, if one may add,  but the story  is in itself very interesting.  Impressive visuals,  great cast and  an ending that will leave the viewers pondering yet clamoring for more.  The saying that comes to mind would be, "curiosity kills, or in this case, imprisons, the cat."