There exist two dominant kingdoms in the known world (more kingdoms are optional), both already on reasonably good terms with each other, but when the princess of one kingdom and the prince of the other fall in love, their families see the potential to forge a long-lasting alliance and happily agree to arrange a marriage between the two lovebirds. But on the scheduled wedding day, just when it seems like nothing could possibly go wrong, the bride and groom are both kidnapped by a mysterious cult with its own agenda, so a team of heroes/adventurers/etc. is formed to rescue the pair and defeat the cult.
Bookmarks