I have some questions for you :
1. How much duration you want the video ?
2. Do you have any examples, links, reference of quality and similar videos etc.. ?
3. What about the story script ?
4. Any Back ground Music ?
5. Will you provide Voice over OR need me to do that also ?
6. When you need this to be delivered ?
Can I have answers for these questions, so I can understand your requirements more in detail and can give you final price and timeline.