A lone orphan's life changes when he encounters a master of a mysterious martial art. To grasp these supernatural skills, he must endure the harsh and eccentric training methods of his sadistic mentor. Despite questioning why chores like laundry and cooking are vital to martial arts, he pushes through. With his ego as a hurdle, the orphan strives to master the legendary lightning knives. Will he prevail or be cut down to size by his own arrogance?