Last Bastion

A cryogenic virus nicknamed “Frostbite” escapes from an underground lab in Chicago. Anyone infected turns into a zombie within 72 hours—and the colder it gets, the faster they move. Some even evolve into ice-armored creatures known as Frostwalkers. Former combat engineer Marcus Cole, haunted by his wartime past, has spent three years secretly building an underground bunker. When the outbreak hits, he escapes there with his 12-year-old daughter Lily, who has asthma, and his mother Eleanor, a nurse. At first, their careful stockpile keeps them alive. Then Lily's asthma medication is damaged, forcing Marcus back outside for supplies. On the run, he rescues a teenage girl named Maya. Her father was a virus researcher, and before he died, he left behind a clue: a natural counteragent may still exist inside the quarantined lab. Marcus decides hiding is no longer enough. He wants to fight back and give his daughter a chance to live above ground again. But the dead are not their only enemy. Marcus's former colleague Victor Kane leads an armed group to seize the bunker and kidnaps Eleanor to force Marcus to hand over control. Marcus turns Victor's own alliance against him and rescues his mother, but loses his left arm to a Frostwalker bite. Maya eventually cracks the counteragent formula, while police officer Darius sacrifices himself by blowing up a gas tank to protect the sample. Lily becomes the first confirmed immune survivor. Three months later, the military finally arrives. But Maya intercepts a classified message: the disaster was never an accident. The temperature is still dropping—and whoever truly started this has not shown themselves yet.