One more very dangerous mission for the unsurpassed and charming spy in the person of Ada Wong. A dangerous abandoned laboratory, the connection with which was lost many years ago, contained interesting data that interested her employers. Having given her a couple of fighters in the squad, she penetrates into the very depths of this secret complex for the sake of unknown developments, but did she know what developments were made by local scientists and what consequences it would turn out for her. Perhaps there is a reason why the whole complex was isolated and all communication with it was cut off a long time ago. Who knows what new dangerous strain of the virus could come out from there.