Though he must rescue Rosaria from Gaskell's floating castle, D finds himself on foot out in the middle of nowhere after his cyborg horse is destroyed, until salvation arrives in the form of a wagon train manned by a transport squad from the Frontier Commerce Guild. The Commerce Guild uses these wagons to supply goods to the scattered villages of the Frontier, so it's rather surprising when these astute business men refuse to let D pay for a horse—but in the end the deal they strike is much better indeed. Gaskell's mobile castle has drifted into the area, making their normally dangerous job that much more perilous, so they hire D as their escort in exchange for the horse. Before accepting the assignment D manages to extricate Rosaria from the castle, but in the process he's blinded by Madame Laurencin, one of Gaskell's evil cohorts.