It's a cake shop run by actual J-pop idols playing themselves, and the comedy lives entirely in watching them fail at the simplest tasks while pretending they're professional. Mika-chan's tired "please just sell one cake without incident" energy is the backbone of every episode. The show costs nothing to watch and asks nothing of you except to enjoy four women being chaotic in the most low-stakes, comfortable way possible.
A cheerful cake shop becomes the unlikely headquarters for Mini Moni, a J-pop group juggling confections and chaos in equal measure. Mika leads the operation with determined patience while Aibon and Nono keep stirring up trouble, and she also has to show newcomer Ai-chan how things work. Their regulars keep things interesting: Yaguchi-san is a lively florist with a shop of her own, and her friend Gocchin, a flight attendant, keeps trying to impress everyone with knowledge she doesn't actually have about the places she says her job has taken her. The result is short, goofy comedy built on its cast of shopkeepers and customers.