Coco, a Beijing modern girl wants to spend a romantic and fancy Christmas vacation in Osaka. However the place where she gets in is Shinsekai ( "New World" in English, is an old neighbourhood located next to south Osaka city's downtown "Minami " area, as known as one of the most poorest and dangerous area in Osaka.)When she arrives there, she starts feeling regret and frustrated by the encounters and the landscapes which are far beyond her expectation. Suddenly she is involved in an incident surrounds a Chinese family there, meanwhile she starts fascinated by Shinsekai through her wondering. In this short and unusual Christmas vacation, Coco discovers a "Japan " she never knows and a "China" that she is not familiar with.

The attendance of 2 boys named Gao Hai and identical in appearance leads to confusion at Happiness Island Summer Camp.