In a future where the world is ravaged by genetically engineered creatures called airwars, humanity finds itself on the brink. With the creatures' creator detained, a global government fails to control the crisis, opting instead to tighten its grip on power. Amidst chaos, a navy admiral discovers some humans are immune to the airwars' deadly stings. Among these "immunes," one stands out with the potential to lead humanity past this threat. However, as the government reveals its ominous plans, the fate of mankind hinges on this one individual's courage and wisdom.

The immune system, an intricate network of organs, cells, and proteins, has evolved over billions of years to protect us against both visible and invisible threats. It orchestrates a remarkable communication network, enabling cells to unite, share information, and combat invaders like bacteria and viruses. However, when this system malfunctions and attacks the body's own cells, it leads to various autoimmune diseases, once mysterious ailments of the past.