Need a game animation video trailer based on my idea

Hey mate, I need a trailer/teaser of an upcoming game just based on my idea. I haven't developed the game till now. I just need the trailer first. That's why you've to draw and animate characters, kingdoms, steps, battlefields, etc. But all of these things must have to be unique. I'll just tell you the ideas and you've to do 3d animations to make the trailer. Note: I don't have any clip, photo, character, or anything else. I just have the idea that you've to make real with animation. I've attached a sample trailer. So, first, take a look at that file and make sure that you'll be able to do this type of trailers just based on my idea. Thanks. :)