Final Character/Style research and Story Brainstorming

In my final i wanted  to have a style similar to the opening scene of kung fu panda with almost flat graphic characters and simplistic backgrounds.

title kung-fu-panda

 I originally wanted to do a story with twin kids that got lost in a city by accident but i changed my idea to a young girl with a traditional background being lead through a city by a punk kid. I want my characters and environments to have an asian/punk design. I want the environment to be influenced by Tokyo/NewYork.