The ace special operations sniper, codenamed Ghost (Faith), has spent half his life fighting for his country, and has been haunted by two tragic events.
After his entire team died in a mission, he chose to seal up his weapons and retire into seclusion, becoming a special operations instructor in order to train his younger generations to complete their self-salvation.
The civil servant girl Camellia possesses a rare sniper talent and is his only disciple. He trains rigorously and devotes all his life's learning to her. He also hides his selfishness in his heart and tries his best to protect her. The girl is gentle and considerate, and entrusts all her love to him.
The two masters and apprentices went on countless high-risk combat missions side by side, adhering to their military beliefs amidst the hail of bullets and guarding the tranquility of the mountains and rivers. In the sky full of gunpowder smoke, camellia accompanied him to pick up the tiny glimmers of light, and slowly got rid of the demons in his heart for many years. The two of them finally stayed together...
Concept: A love story between an instructor and a student