Excited about high school, Tamaki faces a dilemma in choosing a club until she encounters three girls crafting their own computer games. Drawing on her childhood love for board games, Tamaki joins them as the group's artist. Together with programmer Shiina, writer Ayame, and composer Kayo, they rush to complete their game for a major 'doujin' convention. Juggling new skills, distractions from Ayame's romantic scenes, and looming deadlines, the team relies on their collective talents to meet their goal in time.