One day, the sky goes completely dark. Purple-skinned elves - claiming to hail from a hidden "Violet Kingdom" - appear and lead the party to this kingdom, where they claim they will be safe.
The party reaches this kingdom, where they see a terrified man killed by archers before their eyes. Their escorts are killed as well, and the archers vanish. The party finds a magic ring on the first man's corpse and takes it.
Later, they encounter several royal guards, one of whom magically binds the ring to a party member, restoring sunlight to the sky. In terror, they take the party to the kingdom, where it is revealed that the ring belonged to the late Princess Shua.
King Altis considers this a 'smoking gun' in the unsolved murder case, and gives the party one year to prove their innocence, or be executed. The royal guard, close friends of Shua while she was alive, seek to help the party find the true culprit and clear their names.