After collapsing during a marathon dare, Shen Ningning awakens in a brutal realm teeming with savage beasts—a world where human survival hangs by a thread. Her only lifeline becomes the Peak Body Survival System, a relentless program that transforms every challenge into an endurance test: hunt or starve, flee or fall, gather or perish. Failure carries cruel consequences, leaving her no choice but to push her limits each passing day. Just when adaptation seems within reach, a formidable snake beastman emerges, declaring her his destined mate and cementing himself at her side. Caught between the system's merciless demands and mounting threats from the untamed wilds, Shen Ningning discovers that survival in the BeastWorld requires more than luck—it demands a strength she's only beginning to find.