"Thus, with the head of the dragon he died slaying, Ulfbjorn sailed ablaze in the falling snow of the fjord, To where the gates of Valhalla stood opened for him." An archaeological discovery in the frozen wilderness of Svalbard, proves the existence of a monstrous creature referred to in a fragment of ancient Norse poetry; and so leads Japanese industrialist Nagatake Yamashiro, into an audacious plan to put three mighty Ice Dragons on public display in the shadow of Mount Fuji. But in this standalone story which chronicles the fifth adventure of his eldest daughter, Shinobu, the attempt by this woman to thwart the plan in question, results in herself and her sisters (Anzu and Lydia) and her daughter (Satsuki), facing the incredible danger of the trio of Ice Dragons after they become accidentally loosed upon the Japanese mainland.