Needs a lot of work
The idea is good, despite the story is a bit confusing. It would be better if it had some dialogue.
You graphics need a lot of work. You need to learn how to draw people more realistically and in a more detailed way. Buildings and objects need less improvement. Animation is okay, if you practice a little bit your animation skills can become really good.
I like the style, black and white is simple but it looks good. Nice music too.
In short, you have good potential but you still need to pratcice. There are plenty of tutorials in this site that could help you, I suggest you take a look.
2/5 and 5/10