Lu Zhao, a special soldier, retired due to serious injuries and worked anonymously as a security guard in the community. The ancient martial arts master admired his unyielding backbone and entrusted his granddaughter with the mysterious ancient book "Nine Chapters of Fulong". In order to repair his broken body and protect his promise, Lu Zhao used modern science to deconstruct ancient martial arts, and used tactics and wisdom to fight against powerful enemies from all directions. The ultimate showdown between order and power begins.