In a distant corner of the universe, amidst flowers, vines, and an endless expanse of crimson water, numerous placentas float. One of the placentas connects two fetuses, and in a flash of lightning, the placenta is divided into two halves. From one of the halves, a white-haired witch grows gradually, longing to find the other half of the fetus but unable to locate it. Consequently, it gives birth to a black-haired witch from its own body to coexist. One day, the black-haired witch embarks on a journey, leaving behind a letter documenting its travels for the white-haired witch. While waiting, the white-haired witch finds answers and returns to the primordial dream.