A sudden zombie apocalypse spreads across the globe after a mysterious fungal infection mutates and starts turning people into the undead. The infection sweeps through cities in waves, transforming the population into grotesque, fungus-driven monstrosities. The infected come in four horrifying forms: Runners: Fast and relentless, they attack in chaotic hordes. Stalkers: Stealthy and cunning, lurking in shadows to ambush survivors. Clickers: Blind but guided by echolocation, their distorted, fungal-covered faces emit chilling clicks and Bloaters and Shamblers: Massive and slow but incredibly strong, these beasts exude toxic spores that choke and corrode. The camera opens on a wide shot of St. Genesis Memorial Hospital, now a fortress amidst a city in ruin. Reinforced barricades cover the windows, and makeshift warning signs in bold red paint—QUIET ZONE: INFECTED ATTRACTED TO SOUND—hang from the exterior walls. A gentle snowfall begins, muffling the chaos outside, as faint shadows of Runners dart between distant ruined cars and debris. Inside, the hospital is a stark contrast to the dead world outside. A dim but warm glow fills the main lobby, now converted into a communal living area. People huddle in quiet groups, their faces pale but determined. Blankets and scavenged supplies are strewn across the floor, while a handful of children sit silently, coloring in old magazines. The muffled hum of a generator rumbles faintly from somewhere deep in the building. The camera focuses on Billie, 23, crouched by a long folding table covered in supplies. Her sharp, youthful features are streaked with grime, her dark, messy hair tied back into a hasty ponytail. She moves with a mix of determination and exhaustion, organizing food rations into neat stacks. Despite her thin frame and tired eyes, she radiates a fierce, protective energy. Olivia Scrubs blood off her knife while, sitting on her cot. everyone looks toward to door