One morning, on her way to school, carefree, daydreaming Yua Serufu wrecks her bike and an upperclassman comes to her rescue—a chance encounter which sends her down a path to answer the question, "What does 'DIY' mean?"

A genius exchange student from America has surprisingly enrolled at Gata Girl’s instead of YuuVoc. One day, Serufu and the others find her sobbing behind the club room. When she finds out that they’re the DIY club, she starts badmouthing DIY.