In the wild west, two brothers embark on a journey to collect a bounty in a desperate attempt to save their home: but what they find along the way is more than they bargained for.
马龙等人潜入一个村落，不料意外被伏击，而对方竟是自己苦追多年的苗青，马龙这才知道，原来首长委派自己的特殊任务就是护送苗青去锦州，而之所以能领受这个任务还是靠苗青的亲自点将。此时莫莉也已经到达锦州，与林午阳秘密见面。徐汉元命令林午阳彻查截获的中共密电，查清这个代号为特使的小组。