This is a film about human nature. The hero of this film is a businessman. He hired Jews to make tools for him, and then he sold them to others. A seemingly simple program has not simple steps. At first, the businessman only took a fancy to his own interests and ignored those who came to him for help. Later, he suddenly realized his conscience. He knew that if he didn't save those Jews, they would really go extinct.
So he said that his factory needed some workers, so he took the opportunity to save many Jews. He thinks these Jews are the only ones who survived. He spent all his family's money for these Jews. You know he is a businessman, mainly making money, but now he is willing to spend all his money to save these people. This is very touching, and it is a process of discovering human nature.
The ending of the film is very touching, and there is something worth learning. His spirit of self-sacrifice touched us. In the end, he lost everything and his wife left him, but he didn't regret what he had done.