“ The heroes are travelling the great seas by ship. One night when the seas are calm and everything seems fine their vessel is eaten by a great whale. The end? No. They wake in the belly of the animal, it is like a great cave. Full of wrecked ships and strange things to be discovered. Will they make it out alive?”
“ A traditionalist nation that scorns ranged combat is famed for its innovations in body armor and shields capable of blocking all kinds of projectiles and withstanding explosions. The purpose of this armor is to allow one to get close enough to an enemy for melee combat. Conversely it is also famed for its innovations in melee weapons capable of destroying all kinds of body armor and shields to effectively defeat its enemies.”
“ The PCs are accosted in a major city containing at least one famous fortuneteller / prophet of the future. They are informed that their as-yet-unborn child will (insert terrible evil), and that, although they are very sorry, the PC must be executed to keep this from happening.”