Yumi Ishikawa (Mari Atsumi) is nineteen and a popular geisha. Orphaned when a child, Yumi she was raised by Shizuko, the madame of a geisha house. Yumi is impulsive, out-going. And although she cannot claim to be good at Japanese dancing or playing musical instruments so necessary to a geisha, she is a whizz at go-go and will dance the hula at parties. But before becoming a full-fledged geisha, Yumi must go through the ceremony of the "mizuage", when a budding geisha surrenders her virginity to an experienced man who makes her a woman. Takida, a rich money-lender, is chosen for Yumi's mizuage but she offers herself first to Keiichi (Ryo Tamura), who she really loves although she knows that his world and hers are too far apart for a successful marriage.