Lin Jun transmigrates into a scruffy little chicken demon on the battlefield of the demon clans, surviving with nothing but an iron wok and a kitchen knife. By a stroke of fate, he merges with an ancient broken sword and unlocks the incredible ability to duplicate anything, allowing him to split spiritual medicines and weapons into two. Starting out as a kitchen servant, he takes on villains and ventures into secret realms, defeating powerful enemies with nothing but his kitchen knife. Using his duplication technique to rapidly increase his cultivation, he shines in the sect selection trials and gradually escapes his lowly beginnings, establishing his footing amid the inner sect's rivalries and forging an extraordinary path to immortality as an underdog chicken demon.