Clumsy Karin stumbles and dumps food all over a young woman named Kira Matumiya and her guardian Shougo Tachikage. She has to pick up a part-time summer job to pay for the exuberant cleaning bill. The job turns out to be easy and fun, but then, two young women at her summer job go missing. Where did they go? Will more people disappear? Between unsolved mysteries and blood-spurting, Karin's in big trouble.