Qin Tianming, an orphan from the Lower City, drops out of school to pay for his younger sister Qin Tianyue's further education, making a living through defense-assistance missions and odd jobs. After awakening an extraordinary sense, he cultivates the Guidance Method under Old Chen's instruction and steps into the transcendent realm. He then goes undercover in the Black Bone Gang for his employer, works as a bodyguard, and takes on wilderness missions. After losing teammates and surviving a beast tide, he breaks through to the Meridian-Opening Stage and moves with his sister to the Central City. When conscription comes, he heads to the Sighing Forest to provide support. Relying on each other as siblings, they face the world together as he struggles forward between the shadows and the light.