Despite the prevalence of criminal activities in Japanese society, Kyohei Tachibana remains a calm and collected student who's devoted to becoming a skilled patissier. He dreams of advancing his knowledge by attending training in France, but in order to accomplish this goal, he accepts a part-time cooking job for a group of unusual women- Sei, Meg, Jo, and Amy. Kyohei is taken aback when he learns that the women are a fierce group of mercenaries, and he finds himself immersed in their perilous world.