I Live in Fear movie plot

An elderly but energetic factory owner, Kiichi Nakajima, buys a plot of land to build a basement to protect against nuclear fallout after hearing about the hydrogen bomb experiment in the United States. Later, he heard that the Soviet Union was also conducting a hydrogen bomb experiment, and that radioactive dust could blow to Japan from the north, so he gave up the plan to build a basement and planned to move his family to Brazil. The people around him thought he was worrying and making a fuss. The family vehemently opposed his plans and petitioned the court to bar him from dealing with family property, citing insane insanity. In order to cut off his family's back, Kiichi Nakajima set fire to his factory, but he did not expect that this move would lead to the unemployment of workers. Kiichi Nakajima ends up going crazy and ends up in a mental hospital  .