After being dumped by his fiancé, heartbroken Hong Kong police officer Fallon Zhu gains 200+ pounds. His superiors demote him to the job of escorting convicts to Japan. When ha convict in his custody mysteriously dies, he must team up with citizen Thor to solve the mystery.

A Chinese problem child from the US is sent to live with his uncle in China. He immediately runs into difficult situations there, such as a rabbit thief, the secret crush of his uncle, and some classmates who aren't exactly welcoming to him. But luckily he has some excellent kung fu skills.