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For several years now, humanity has been battling a terrifying virus that is trying to destroy it. The symptoms change, the developed vaccines do not help, but it turns out that not only official developments can help. In one of the bunkers on the outskirts of the city, which has been closed for many decades, human experiments were conducted. This was one of the attempts to create a vaccine that makes a person invincible. Now there are practically no chances for humanity's salvation, so despite the danger that may lurk beyond the bunker's walls, you still try to break it open. You managed to open the bunker, and now you have 75 minutes before the self-destruction process starts. Did those scientists manage to create a vaccine, or is it just another trick of madmen that did not lead to results?