Policeman Di Jun faces the Chinese triads, the yakuza, and the Spanish mafia, in an attempt to prevent them from taking control of the city. But Di Jun will have the unexpected help of Molly, a mysterious woman who discovers herself as a witch, and who will lead Di Jun to an imaginary and bloody mission. The magic witch and Di Jun will face a common enemy to save the city.
本片共三个故事。 故事一，唐朝。鳐县人喜食野味终日伤害生灵杀生造孽，以至肉市血水常年浸入地下引来‘恶物’盘踞，食人幼子祸害乡邻，全县人心惶惶，某日神秘客‘十三’游方至此，挺身而出为百姓除妖解难，终保一方百姓平安。 故事二，明朝。某富家小少爷挥霍任性糟蹋粮田，惹得民怨四起，众农户敢怒不敢言，终一日，小少爷不思悔改变本加厉惹来天怒人怨，神秘客‘十三’再度现身，平民怨，解天怒，点破玄机度世救民。 故事三，民国。富豪杨老板重男轻女对幼子溺爱无度，惹来女儿妒忌，为博双亲疼爱谎称可见鬼魅，从此以谎盖谎终酿大祸，惹得全城上下谣言四起，神秘客‘十三’途经小城洞悉真相，为杨老板一家化解心结，为小城平息骚乱。
