As the city prepares for Halloween, Ratman walks down an alley and a strange shadow appears before him. A voice declaring itself the true son of the emperor of the European Youkai, Backbeard, Backbeard Junior, belongs to the European youkai Bat-cat. Bat-cat asks Ratman to help him collect blood for the ressurection of Backbeard. He has a reason for wanting to achieve something great. Ratman turns him down, but when the huge reward is set in front of him, he changes his mind and offers to help. But there's no way Ratman will simply do as he's told and collect blood, is there...?!
I've come to gather human blood for
Backbeard-sama.
.أتيت لجمع دماء البشر لأجل لحية الظهر-ساما
Ich bin hier, um Menschenblut
für Meister Backbeard zu sammeln.
Vine a reunir sangre humana 
para el señor Backbeard.
Vine a reunir sangre humana
para el señor Backbeard.
Je viens récolter du sang humain
pour le seigneur Backbeard,
Sono venuto qui a raccogliere per il sommo Backbeard 
il sangue fresco degli esseri umani.
Eu vim para reunir sangue
humano para o Mestre Backbeard.
Я прилетел собрать кровь 
для господина Бэкбэда.