In a world devastated by a lethal virus that turns people into violent, rabid creatures, a group of survivors struggles to stay alive in a post-apocalyptic scenario. Amid the chaos, a virology expert becomes humanity's last hope.
With a touch of desperation and courage, the protagonist, who has managed to remain free of the infection, embarks on a dangerous mission to find the first infected individual, known as "Patient Zero." The key to developing a cure may lie in their peculiar biology, as this carrier has the ability to think and reason, unlike the other infected who have completely lost their humanity.
Throughout their journey, the hero and their group face hordes of infected individuals and other equally desperate survivors, who will not hesitate to do whatever it takes to survive. However, time is running out, and tensions within the team rise as they uncover dark secrets about the nature of the infection.
As the seasons change and desperation mounts, the protagonist realizes that perhaps the only salvation for humanity does not solely depend on finding a cure, but on people's ability to maintain their humanity in times of crisis. In this action-packed journey filled with moral dilemmas, heartbreaking truths about what it means to be human will be revealed.