Yggdrasil

Bilbo Baggins dies peacefully on the ship to Valinor, and when he wakes, he is a young hobbit living in Bag End. Thorin Oakenshield, on the other hand, drowns in his own blood on a gruesome battlefield; his screams as he wakes in Ered Luin will haunt his sister and nephews for years to come. -— (Fixing their broken world isn't going to be as easy as they think.)