The Protector 2

Kham is the last in long line of guards who once watched over the King of Thailand's war elephants. Traditionally, only the perfect elephants could successfully help defend the throne, after his harrowing quest to retrieve the elephants, Kham returns to his village to live in peace. But for someone as good in martial arts as him, peace is but a wishful thought.

The System

When a young soldier, newly returned from war, gets caught up in a drug bust, he is recruited by the authorities to go undercover in a notoriously dangerous prison in order to figure out what is really going on.