Neuro solves an arson, but Yako notes that the arsonist has no motive. Police detective YÅ«ya Higuchi confirms Yako's observation, saying that the arsonist was controlled by an experimental "electronic drug". The neuroscientist who created the drug is killed by agents of HAL, an artificial intelligence he also created. When Neuro enters the digital world, he is apparently killed by HAL's sphinx bodyguards.