From a torturous cell in Africa, Abel Powell is released and given the chance to regroup his team of skilled mercenaries for one last job. A top scientist will guide them half a mile underground through an ex-Soviet bunker to extract the vital specimens and information being paid for by a mysterious backer, but what they seek should never have been found!一个问题，石青峰心里有了三个猜测，但无论事实是哪一种，他这个时候都很想回去再试探一下。否则他绝不甘心就这么再次灰溜溜地回去了。
