The keep of the legendary wizard Mytus the Mad was razed, looted, and ransacked generations before your oldest ancestor was born. The only reason the chaotic sorcerer’s name is still whispered millennia after his death is because of what lies half-buried amid the scattered flagstones of his long-vanished keep: The Hypercube of Myt. Each year on the vernal equinox, the southern entrance unlocks itself from sundown to sunrise. And this is precisely why you are here now, at the annual Festival of the Fatted Calf. The festival is famous for drawing the curious, the foolhardy, and the uncautious from far and wide to ponder the mysteries of the Cube. After the more sensible denizens of your village begin to stagger home, you and your friends continue drinking grog-laced ale and speculating on the nature and contents of the immutable Cube. Is it a treasure vault guarded by extra-planar forces, or perhaps a gateway to another time and place?