New to LotRO is Episodic Content, that is, it is Serialized Content. This is like a weekly TV Show, or a magazine story told over several issues.
This series is called "The Ballad of Bingo Boffin" (previously called "The Adventures of Bingo Boffin".) Information is given in the thread below. Please note that until release and we play it, there will be confusion.
https://www.lotro.com/forums/showthread.php?572656-Developer-Diary-Episodic-Content