Lin Chu regained consciousness in the middle of a blood-soaked road under a scorching sun, surrounded by wandering zombies and scattered human remains. A mechanical voice in her mind announced that she had been selected for Infinite Apocalypse. System No. 32588 gave her a shelter key and a sixty‑second novice protection shield. Her only belongings were the clothes she wore jogging and a belt‑style waist bag holding her phone, keys, and a small water bottle. As a forensic doctor who had only graduated two months earlier, her professional familiarity with gore allowed her to stay calm while other survivors screamed and panicked. She immediately planned an escape route and spotted a weapon: a human thigh bone lying on the ground.When the protection shield dropped, Lin Chu sprinted, snatched the bone, and killed the nearest zombie with a single headshot. Her swift, precise strikes impressed a nearby survivor but also drew the attention of hostile newcomers who intended to rob the keys. She teamed up briefly with a panicked twin‑tailed girl who carried only a spatula, helping her escape a zombie horde. The pair rushed into the office building of a science park. Inside, most doors were broken or unlocked, so Lin Chu finally entered a restroom, closed a stall door, and placed her key on it. The system confirmed the shelter was set up and transported her into a new space.The shelter was a cramped, dim room about the size of a budget Hong Kong hotel, equipped with a tiny bed, a restroom with a toilet and shower, and a small window. After cleaning off the blood and brain matter, she checked her system panel. She had gained a talent skill called Turn Waste into Treasure (Level 1), which could transform discarded or damaged items into usable ones, with a thirty‑minute cooldown and two uses daily. Using this skill on the chipped thigh bone, she refined it into a Bone Club, a weapon with enhanced durability and headshot capability. She also received a newcomer gift pack containing an Extra Large Backpack with an internal space of 2m×2m×2m, enabling her to store items regardless of weight. The backpack allowed her to stow the bone club and all shelter supplies, leaving the room empty.The system issued a survival mission: stay alive in this zombie apocalypse world for thirty days or be eliminated. Failure would result in immediate elimination. The mission difficulty was B‑class, and the reward was fifty points. The shelter itself counted toward survival time, but she had only three nutrient solutions for food. She discovered daily optional missions: submit a pair of zombie eyeballs for a random food item, or submit ten zombie body parts for one point. Analyzing the zombie anatomy as a trained forensic doctor, she calculated that dismantling a single zombie could yield multiple submissions, potentially solving her food shortage. However, she would need to test this theory by killing zombies outside.Before leaving, Lin Chu activated the peephole vision on her shelter door, costing five points, which allowed her to see the restroom outside. The footprints on the ground indicated that other survivors—especially the group who had talked about robbing her—had already discovered her shelter location. She understood that after the seven‑day novice protection period, they might try to damage her door and force her out. To strengthen her shelter, she accepted a reward mission that had been triggered because she was the first among the batch to set up a shelter: kill five zombies within one hour, with no penalty for failure, and the reward would unlock the current world’s security door. Activating this security door would make her shelter immune to door damage, a critical defense against human threats.Stepping out of the shelter in a black tracksuit, bone club in hand, Lin Chu moved quietly through the building. She found a zombie, crushed its skull with a single blow, and immediately stored the corpse in her spatial backpack before any alarm could spread. The mission countdown continued, and she prepared to hunt the remaining four zombies deep inside the building, knowing that her window of relative safety was narrow. With her forensic expertise, resourcefulness, and growing control over system‑granted abilities, she was determined to survive the thirty days while fending off both zombies and hostile survivors.