After taking human form, ancient weapons from different dynasties roam modern society in search of companions and energy, fighting over territory. Clashing cultural values force them to evade pursuit by the Bureau of Anomalous Investigations, yet before they realize it, they have formed deep bonds with humanity. Lin Tian is a sword who desperately hopes ancient weapons can truly become part of human society. To make that happen, he navigates conflicts with his companions, his enemies, and the Bureau of Anomalous Investigations.