A small, primitive village has yet to discover fire, which is a good thing because there are highly flammable (but not otherwise dangerous) gasses in the air. The heroes, blissful in their ignorance, don't know that and think it a wonderful idea to show the locals open flame.
Unbeknownest to the character, he is in the royal bllodline. Suddenly the majority of royals fall ill and die, and the hero is left with the crown, but no experience or idea of what to do.
A Deity of some sort has unleashed a plague of bookworms or something like that in the area. Almost all spellbooks are destroyed, along with bardic and historical books.
...among the items identified was a dolphin-shaped bathtub of marble and porcelain, a winged-back, high-chair of teak and velvet studded with fire opals, the gear-thing contraption from the dungeon-laboratory of Dr. Bezemot, the oil portrait of the rubicund Madame Orundilde Tarwygg, and a strange item known only as the Last Candle.