The Nadutong Company where Zhang Chulan and Feng Baobao worked sent a special mission - to escort the former treasured sword "Hiruchiwan" to the border, fulfilling a decades-old agreement with the Ishikawa family of Yingguo. Zhang Chulan and Feng Baobao will face unfamiliar teammates, the harsh Northland weather in winter, and the powerful enemy who is eyeing the knife. A battle to defend "Zhichwan" started in the forest and snow fields.
