Ok...
I hope you plan on making a sequel. I mean, there is no explicit storyline but, there is room for something interresting. You need to work your backgrounds. I would have enjoyed a longer movie with some kind of storyline because, seriously, there's room for it! Where do they come from? What are their goals? Is someone gonna try to stop them? Continue developping the idea because dark cloaked people gathering at night to do evil can be a real hit: it's mysterious and interresting. But there is surely a reason why they do so and I want to know. The video left me hungry for information so please go back to your storyboard and send a related video which would be longer and more explicit. I would overlook the backgrounds if the story was good enough, but right now, I can't give you the passage note.