Survival Chinese

An American savant and his interpreter brother travel to China on vacation only to get lost and end up in a small town full of zombies infected by a mysterious off-brand liquor. When his brother ends up in a coma, it's up to the savant to find a living doctor with the help of the locals. Unfortunately, they don't speak any English so he has no choice but to learn Mandarin Chinese in less than a few days. Armed with a blunt object, some grammar books, and his prodigal mind, he must overcome zombies, vagrant thugs, and mistranslations in order to save his dying brother.