Masaru Aihara plans a mountain climbing trip as a company get-together. There are six participants. The weather was fine and the mood was harmonious, except for Maya Akiyama who had no presence. On the way, Aihara and Chika Kawaguchi engage in a fight under the watchful eyes of the participants. Takahashi witnesses this and is not at peace. He and Chika were having an affair, and Takahashi was in the midst of a divorce because of it. And as if he knew what was going on in Takahashi's mind, the weather collapsed...