You're a hotshot who just had a business in the city and are now looking for a place to wind up at. The planet is having a rough time at the moment, and word has it that the next world war is very likely at your frontdoor. But you're lucky enough to get yourself into an expensive suite at the top floor of one prestigious hotel, when out of nowhere, the city is hit by a bio-weapon and the impact turns everyone who's unlucky enough to be unprotected into mutants. Your wife is somewhere in the city, and what stands between you and her are 99 floors full of mutants and lunatics lurking in almost every corner.
