The story of Battle Programmer Shirase (BPS) revolves around a freelance programmer named Akira Shirase. He's a very talented, yet mysterious computer programmer. Because of his incredible abilities, he's contacted by several individuals (curiously, all of them are very similar persons named Akizuki Kaoru) to do all sorts of strange computer-related hacking/security jobs. He's a very quiet guy who lives alone in a small apartment near his niece's house. At first, the episodes revolve around some freelance jobs that highlight his abilities. However, later on in the series, characters came back and offer help or plot twists.