It was an ordinary rescue mission for dam controller Togashi Teruo (Yuji Oda) and his colleague Yoshioka Kazushi as they set out to assist a few climbers who met an unexpected blizzard near the Okutowa Dam, the largest dam in Japan. Things got worst when WHITEOUT--a meteorological phenomenon appeared and Togashi lost his best friend forever. Meanwhile, Utsuki Hirotaka (Koichi Sato) and his group of terrorists took over the dam. Among the hostage is Hirakawa Chiaki (Nanako Matsumisha), Yoshioka's fiancée. Either the government pays the ransom or the dam will blow up along with the 200,000 residents living close to it. Fortunately, Togashi was not captured by the terrorists and he is now on his own to fight the well-equipped terrorists and to rescue both Hirakawa and the Okutowa Dam alone.