优雅贵族的休假指南。

　　圣杯是传说中可实现持有者一切愿望的宝物。而为了得到圣杯的仪式就被称为圣杯战争。
　　参加圣杯战争的7名由圣杯选出的魔术师被称为Master，与7名被称为Servant的使魔订定契约。他们是由圣杯选择的七位英灵，被分为七个职阶，以使魔的身份被召唤出来。能获得圣杯的只有一组，这7组人马各自为了成为最后的那一组而互相残杀。
　　卫宫切嗣的养子卫宫士郎，偶然地与servant中的剑士Saber（セイバー）订定契约，被卷入圣杯战争当中...

　　Darkside Blues (Japanese: ダークサイド・ブルース, Hepburn: Dākusaido Burūsu) is a manga series by Hideyuki Kikuchi. The story has been adapted into an anime film directed by Yoshimichi Furukawa. The film was originally licensed by Central Park Media and then later licensed by ADV Films.
　　The story involves the town of Kabuki-cho, home of a resistance faction called Messiah. In the futuristic setting, Kabuki-cho is one of the last places of freedom because the Persona Century Corporation has taken control of the majority of the Earth. Kabuki-cho is hence known as "The Dark Side of Tokyo". Furthermore, a mysterious stranger called Darkside appears to protect the citizens of Kabuki-cho.

　　怪盗基德的预告信出现在了北海道函馆，斧江财阀的收藏库中。这次基德将要盗走的是，江戸幕府时期新选组副长土方岁三的日本刀。向来追逐奢华宝石的怪盗基德，居然会看上刀？
　　此时，被称作西部名侦探的服部平次和柯南一行人，也因为剑道大会来到了函馆，在基德执行预告的当日，平次看穿了基德的伪装并对其穷追不舍！
　　同一时间，一具尸体在函馆仓库街被发现，尸体的胸口有一个十字伤口。搜查中，出现了一位被叫做“死之商人”的活跃于亚洲一带的美籍日裔军火商。这个人一直在寻找斧江家初代家主藏在函馆的宝藏。斧江家江戸幕府战争时代深耕军需产业，传说那宝藏是能扭转幕末纷争的强力武器，而这宝藏似乎和基德追逐欲盗取的刀有着千丝万缕的联系。在基德瞄准刀的同时，有一位剑士也在向基德逼近……