In the 1960s, Edward Asifford, the sixth-generation heir of Ashford, a European hereditary aristocratic family, and his university classmate Oswell Spencer found a way to make people feel better while conducting paleontological research. The resistance to physical damage is increased several times, but it will cause the virus to lose consciousness of the host. The two named this virus the ancestor virus. Subsequently, the two established the international pharmaceutical company Ambe Leila, which researched and developed various drugs on the surface, but secretly engaged in the research and development of biological viruses. The US military believes that this type of virus will play a decisive role in the war, so it acquiesced to Ambe Leila's virus research and development plan and became the umbrella of Ambe Leila.
After the crisis broke out, Ambe Leila and the US government began to cover up the truth of destruction and forged various facts, and members of STARS, Jill, Chris, and CIA agent Leon·S·kennedy also began a long road to uncover the truth. The victims of the destruction of Raccoon City also organized many demonstrations to protest their shameless behavior to the US government. Finally, activists in the victim organization used the virus to spread maliciously in an airport in the United States, and Chris’ sister happened to be in the airport. More and more people in the airport were infected by the virus and turned into zombies. Leon S. Kennedy was also ordered by the CIA to go to the airport to look for clues behind the incident. In the airport, Leon·S·kennedy rescued Claire Redfield , who was surrounded by zombies , and the two began to investigate the truth of the incident together. As the investigation progressed, Leon·S·kennedy and Claire Redfield gradually discovered that things were not as simple as they seemed.
