It was an extremely cold winter night in the unmanned drone mountain area, where a blizzard howled, covering every corner of the valley with a blanket of white snow. The slightest carelessness could lead to the danger of freezing. At the top of a small hill stood a wooden doghouse—the resting spot for the rescue dog, Pluto. As soon as the wind and snow subsided, he poked his head out, somewhat proudly hanging the wooden sign indicating he was on duty beside the doghouse. Then, he fastened the emergency rescue barrel around his neck and set off on patrol with an air of importance. Before long, he reached the riverbed covered in thick ice, where he accidentally dropped the rescue barrel into an ice hole. Just as he was growing anxious, the barrel resurfaced—and along with it appeared a curious-eyed seal. The seal seemed eager to play with Pluto, but this overly serious dog had no intention of wasting time with the little creature...