After heading back to his regular sweeper bar, Sven finds himself facing slim pickings on the bounty front. But a damsel in distress and her tale of family woe quickly distract the chivalrous sleuth, not to mention her stack of cash. And what of the mysterious assassin bearing the brand XIII? High on the city rooftops another young sweeper by the name of Saya has decided to take this stray in. Black Cat, intrigued by her refusal to kill, follows Saya on a hunt to step in at the last moment. Just as wild cats can prove impossible to tame, you know what they say about curiosity...