It's the festival of Per Bast, where celebrations of the goddess Bastet have even attracted the royal family of the Pharaoh. But for the cats, it's something else! Their high priestess has just crossed the river Styx, and they have to elect her replacement. Apoua, the baboon, has heard of a white female cat who can only be the chosen one. For Nefertiti the cat, it is a night of travel with a thousand dangers that begins.