On a turbulent red-eye flight from Los Angeles to Nashville, passenger Jenny, a cautious rookie flight attendant, struggles to manage an unruly traveler while dealing with her own anxieties. Midway through the journey, an elderly man traveling with a cage containing a hamster falls violently ill. He begins coughing up thick, black blood and exhibits rabid, erratic behavior, biting a flight attendant who tries to restrain him. The pilot immediately reroutes the plane, making an
emergency landing at a remote, under-construction terminal in Kansas City to secure urgent medical help.Upon landing, the passengers and surviving crew are ordered to remain inside the terminal by heavily armed government agents and Centers for Disease Control and Prevention personnel. Panic quickly sets in as the doors are welded shut and the windows are barricaded from the outside. The group soon realizes they are trapped in a mandatory quarantine zone.Inside the terminal, the bitten flight attendant rapidly deteriorates, transforming into a feral, bloodthirsty monster that attacks the survivors. Jenny, along with a courageous cargo pilot named Henry, a cynical passenger named Ed, and a few others, must band together to survive the escalating nightmare. They discover that the infected man was carrying a mutated, airborne strain of a lethal rabies-like virus, the very same pathogen that caused a catastrophic outbreak in a Los Angeles apartment building days earlier.As tension mounts, distrust and fear fracture the group. Survivors are picked off one by one, turning into infected predators who hunt their former companions through the sprawling, dimly lit terminal corridors. Jenny and Henry take charge, utilizing their wits, makeshift weapons, and teamwork to navigate the labyrinthine
construction site. They search desperately for a way out, battling both the infected horde and the claustrophobic terror of their confinement.Eventually, Jenny and Henry uncover a maintenance exit leading to the tarmac. However, their escape is fraught with peril when they realize they might be infected themselves. Outside, military snipers and containment teams wait with strict orders to eliminate anyone attempting to breach the quarantine. In a desperate final bid, Jenny and Henry make a break for freedom, but as they rush toward daylight, they are intercepted. The grim reality settles in: the government intends to silence everyone to prevent the horrific truth of the viral outbreak from leaking to the outside world, sealing their tragic fate within the terminal.