You are a songsmith and you must cross the causeway in the Ravenous Sea to sing to the Serpent King. Your home is built on the back of the sleeping King - one of many giant beasts to roam the world - and every 100 years, he begins to wake. A song must be sung to him to lull him back to sleep, and you have been chosen to sing the song.
This is a companion discussion topic for the original entry at https://rpg-trader.com/products/3549/a-song-for-a-serpent-king