After the abyss cracked open the world, humans retreated into the giant wall city to survive. Outside the wall is a hunting ground for monsters, and inside the wall are more man-eating processes and profit chains. Zhou Lin, a low-level gray worker, has no choice but to risk his life time and time again in order to support his family and protect his half-sister Zhou Xiaoyu. Until he awakened to the "search, strike, and remove cheating system" to recognize high values and determine the death line,
Card withdrawal. When others cheat, they gamble their lives. When he cheats, he trades his life for goods, goods for qualifications, and then pays back one by one all those who want to take money from his life. It was only as he climbed higher and higher that he realized that it was not only the monsters outside the wall that were eyeing him, but also the people inside the wall, as well as the real living things deep in the cracks.
