Adventures in Middle-earth: Player's Guide - Rules of Play says:

'Smaug has been defeated, the Battle of Five Armies has been won, and Bilbo has returned to the Shire. But much danger still remains, and from the Orc-holds of the mountains to the dark and corrupt depths of Mirkwood a darkness waits, recovering its strength, laying its plans, and slowly extending its shadow…'

The Players Guide is the first release in the brand new Adventures if Middle Earth Series! Which gives you the Middle-earth setting-specific rules and guidance to create your characters and adventure in the world of The Hobbit and The Lord of the Rings using the OGL 5e ruleset.