An elite team of mercenaries is hired for a covert operation, deep inside a former Soviet state. Arriving at an underground laboratory, their mission is to secure specimens of genetically engineered human and alien hybrids. Battling with a ferocious armed militia as well as dark, menacing creatures, the odds of survival are stacked against them.。搏击争霸赛期间,程志江让张浩正打假拳未果,失手打死了数落自己的顺子。程志江出狱后,意外夺冠的张浩正接到了打黑拳的邀约。报警后,张浩正充当线人深入虎穴。随着调查的继续,他发现程志江早已不是情同手足的兄弟,六爷也隐藏着巨大阴谋······。