Scenes from the daily life of "Ketchuppers," a band named after lead guitarist Wakatabe's love of ketchup. Alongside steadfast singer Hashitani (Tani), the flaky Wakatabe (Waka) is joined by Tachin, Sakai, and Hino. Having been together since their high school music club days, they have achieved success thanks to their talent and the efforts of their manager, Ida.