Historia, Ymir and Y/n worked as U.S agents, now goes by the DSO under Leon Kennedy's command, she, Ymir and Y/n started to coordinate with the BSAA agents to look for the user of the C-Virus, Ada Wong, planning to destroy the rest of the whole world using the virus But however not Only Ada had plans on using the virus, but different people also Will the world be destroyed? Or will it be saved by Leon's best DSO agents?