does any one have a good ideal for a rpg adventure?

Rpg where magic has come to the world unexpectedly. Our adventurers must learn to utilize the magic in order to extinguish it from the world. The game ends with all magic leaving the world. Its a flip on the common rpg trope of trying to keep the magic alive!

that's cool but i'm not iterested in a magic rpg but good ideal

An RPG where people and animals die unexpectedly and from no identifiable cause, and the hero(es) must find the reason for this oddity before mass panic and death occur.