As the party arrives at Castle Liene, they are greeted by an attack from its soldiers and realize that the castle is infested with monsters. During battle, the soldiers mention that Liene's alliance with Lux is no more. The party defeats the soldiers and goes on to investigate the castle for traces of the Avalonian Empire's ties with Castle Liene.
As the party descends further into the castle's depths, they encounter the Hell Minion in the castle dungeons. After defeating the Hell Minion, the party releases two prisoners: a gnome who tells the party that he is willing to exchange awesome items for fangs that don't lie and a prisoner who mentions that the Empire has moved towards the areas beyond the mountains, and is unreachable without an airship. Sol suddenly remembers that there is a docked airship near the castle and so does the party go forth to claim the winged vessel.