After twelve years in the military, the protagonist is discharged and hopes to leave worldly affairs behind.
Living a quiet life after leaving the service, he suddenly receives a mission from his former commanding officer. He learns that the person he is to protect is his teammate's older sister, so he readily returns to Hua City.
But as soon as he arrives, he encounters Xiao Ruxue, who has been set up and targeted for murder. From then on, he sets out to keep her safe. The road ahead is fraught with bloodshed and danger, and his arrival sets off a massive storm across Hua City.
