White Sky. If Necessary, Destroy

What could be more routine for a guide than accompanying a group of scientists through the anomalous Zone? However, this time everything went wrong from the very beginning: the route had to be changed, the scientists' behavior raises suspicions, and some dubious characters keep appearing along the way...
And the strangest thing is the order given to the guide by his real leadership: if necessary, he has the right to destroy the entire group. But what lies behind this unspoken order, and what risks does its execution pose to the guide himself?