Kham finds himself in trouble when he is accused of killing a trader. While on the run from the trader's nieces who are martial artists, Kham meets a friend who warns him of a terrorist plot.

A magical book is being sought by a group of bad guys who aim to misuse its power. Yod is assigned to protect the magical book without realizing that a Hanuman tattoo that he got since he was young is the most powerful weapon to defeat the bad guys.

The Devil's Cauldron, a city where depravity and violence has forged a society in which only the lethal and callous can survive, two young men who possess the intellect and ferocity to flourish, carve a name for themselves as the most efficient and unstoppable hit men. Side by side, these two brothers are the deadliest killers, feared by even the most evil criminals. But when a woman of rare beauty mysteriously enters the brother's lives she blinds them with her sweet promises and turns them against each other, resulting in an epic battle that threatens to bring the Devil's Cauldron to the brink of destruction.