Androids, science, and magic. All exist in tandem. Despite this idea, an alternate truth is transpiring on the streets of the U.K. The time-magic detective Sai, her computer adept sister Ren, and their android friend Blue set forth to uncover a new mystery. An incurable strain of mana poisoning rampages through England's citizens and the HW Detective Agency is determined to uncover the plot...no matter how many times it kills Sai.