The trio senses that the innkeeper's daughter new lover, a stranger who bunks in the abandoned barn, is an evil supernatural. He's easily vanished without resistance, but only because he's a troll, able to return from the underworld effortless, thanks to a scepter-sized magical wand. They rightly worry that he won't allow anyone into he barn or accept an invitation to stay in an inn-room, for he's constructing a portal to the underworld. It must be destroyed, or the world will be flooded with all vanquished monsters.
—KGF Vissers