Coco, a rich Beijing party girl, is bored with her boyfriend, her giggly friends - her whole frivolous life. Looking for a getaway, she books a trip to Osaka, Japan where she's heard they celebrate Christmas with heartwarming nostalgia. Coco arrives at the hotel recommended by a friend and is shocked to see that it's located in Shinsekai, Osaka's crime-ridden underbelly of poverty, vice and colorful characters. Coco flees to a five-star hotel like she pictured in her vacation fantasies. But when her friend gets entangled with the Chinese mafia in Shinsekai, Coco must venture into a Japan that she never knew and a China that feels equally foreign.