Tsuyoki ari

Deep in the ice is earth's greatest threat that can only be stopped by one man.

Based on the novel "Tsuyoki Ari" by Seicho Matsumoto In her past, Isako Sawada ran a restaurant. She then met Nobuhiro who is 31 years older than her and an executive of a corporation. They eventually married. Nobuhiro owns a large mansion and his money is managed by housekeeper Saki Tsubaki. Isako Sawada doesn't like that arrangement, but she hides her contempt because she has a plan. Her plan is to become a widow in 3 years and inherit one billion yen from her husband. Isako Sawada schemes to have Nobuhiro die in an apparent natural manner and she is having a relationship with another man.