Luna Ashryver Galathynius disappeared the night her parents died. When she ran away that night, she wasn't saved by arrobynn, but instead, a pack of enormous wolves. Now that her older sister Aelin has taken back the throne of terrassen, she plans to go introduce herself. But the wolves have other ideas. A distant enemy, the Moonbeams, are all dead except for one. The wolves send her on a mission to find and kill him in exchange for her freedom. Unfortunately, she has no idea what he looks like.