Two smugglers meet two customs officers at sea, and happen to kill them. The story continues fifteen years later when a son of one of the officers and a smuggler's daughter fall in love with each other.队伍中没有壮劳力，虎子队长也只能同意，假如遇到变异老鼠的话他一人恐怕也应付不了，这还是在变异老鼠的实力大不如前的情况下，若是以前鼎盛时期的变异老鼠，三个普通人围攻它未必能取胜，在人类进化者的能量流失后，它们也跟着变弱了，还有爬行者也不像以前那样凶猛，甚至有点向普通野兽转化的迹象。