Battle Programmer Shirase (BPS) follows a free‑spirited, highly skilled hacker who refuses to work for money. Instead, he takes on assignments that appeal to his unique taste and expertise. His calm, unassuming demeanor starkly contrasts the dangerous missions he undertakes. When the tyrannical King of America wreaks havoc through the internet, Shirase is thrust into a series of thrilling adventures, each introducing new, intriguing characters into the story.