Director Phawat Panangkasiri draws on the mystical of the naga - a fierce serpent with multiple heads that's said to be the protector of the Buddha - to craft this high-concept thriller combining breathless drama with philosophical ponderings about karmic redemption and retribution. Buddhist lore states that the naga once transformed itself into a human in an attempt to become a monk. The creature's elaborate ruse was foiled, however, when the Buddha detected its false nature and ejected it from the monastery after teaching it the path to righteous karma in order to give it a chance to be reborn a true human. In this tale, unrepentant criminals Parn, Por, and Singh carry out an elaborate and successful heist, hastily burying their booty on temple grounds in order to avoid detection by police. Upon returning months later to collect their riches, the three criminals are troubled to discover that a new hall has been erected on the exact spot their treasure had been buried. Desperate, the scheming trio approaches the eldest monk and asks to be ordained; perhaps if they can gain access to the monastery they can successfully track down their treasure. As they commence studying the teachings of Buddha, volatile Parn and Singh remain singularly focused on the task at hand as Por makes the decision not to be ordained but to seek absolution for his sins. An already tense situation soon threatens to erupt into violence when Singh's girlfriend (Inthira Charoenpura) appears unexpectedly and the three men prove unable to agree on what course of action to take.