Mio pays a visit to Yoshika, who is studying in a medical school in Helvetia during her break from the 501st Unit. In the occasion, Yoshika uses her magic to rescue her friend Althea from an angry polar bear, revealing herself as a witch. Upon learning that both Mio and Yoshika are from the army, Althea asks for their help to make contact with her father, who is the captain of the Venzian battleship Doge, but when she manages to reach him, the communication is cut short as the ship is threatened by a massive iceberg...