Hiei gives Yusuke a cassette, sent from Koenma, that will describe his next case. Yusuke, Kuwabara, and Botan are recruited to rescue the ice maiden, Yukina, from the greedy and cruel human crime lord, Gonzo Tarukane, deep within the mountains. Tarukane forces Yukina to cry in order to secrete jewels from the tears of her eyes, which are considered to be highly rare and valuable. It is revealed that Yukina is actually Hiei's sister, in which Hiei plans to kill Tarukane if he arrives before the others.