A lively cake shop has been opened by Mini Moni, the J-pop band. Leading member Mika-chan strives to maintain order, as Aibon and Nono tend to cause chaos, while also guiding new recruit Ai-chan. Regular patrons of the shop include Yaguchi-san, an animated florist, and her flight attendant friend Gocchin, who often tries to impress others with her supposed knowledge of travel destinations she has never experienced due to her job.