B: THE BEGINNING is an anime series about a fortified, technologically advanced city under siege by a serial murderer. Cremona is a nation powered by advanced technology, but law enforcement can't get a handle on some major crimes in the area. But it's the mythical serial killer known as "Killer B" that legendary Royal Police Force (RIS) investigator Keith Kazama Flick (Ray Chase) is interested in stopping. The surly detective is paired up with Lily Hoshina (Faye Mata) in hopes of finding him. But Killer B, who is responsible for the deaths of at least 15 evil criminals, is not who or what people think he is, which makes everything much more complicated.