A group of terrorists has taken hold of the largest dam in Japan. They also capture the workers as hostages, and demanded $5 billion yen from the government with a 24 hour deadline in exchange for the lives of the hostages. To make things more complicated, there was a snowstorm and no one can get in or out near the area. Fortunately, the terrorists did not capture Togashi, the dam controller, and he is the only person who can rescue those hostages from the terrorists...

The first 'Front and Back' film.

The second 'Front and Back' film.

The third 'Front and Back' film.

The fifth 'Front and Back' film.

The final 'Front and Back' film.

The fourth 'Front and Back' film.

Former childhood friends Kadoya Kaneo and Tochino Masatatsu cross paths again. Kaneo is now a yakuza member, while Masatatsu is a nightclub owner with a distaste for crime gangs. When a yakuza boss dies, a struggle for his position takes place between Kaneo's boss Awano and the young Nakahira. Nakahira's men try to extort money from Masatatsu, bringing him in between a yakuza battle.

Shimazaki Sanpo is an experienced mountain climber and rescue team volunteer. Sanpo loves the mountains and wants as many people as possible to experience everything they have to offer so much so that he never holds a grudge against anyone for causing an accident due to their own negligence. Even if a fellow rescuer dies, he's the kind of man who can look toward the corpse and say "You did your best." One spring, newcomer Shiina Kumi is assigned to the Nagano prefecture mountain rescue team where she experiences growth thanks to Sanpo's guidance and the seemingly harsh training methods of the team's captain, Noda. However, she becomes depressed when she's unable to translate her skills to a real-life situation. As her confidence wanes, multiple accidents occur simultaneously due to a mountain blizzard, forcing the entire team into action.

A year later, Mouri was demoted, and Saiga was expelled from the gang. Engetsu suddenly fell ill, and in Yokohama, where Engetsu's influence waned, drugs began to spread. Amid the unrest, Mouri and Saiga begin to confront each other.