His father wanted to invest in the funds that Du-sik was handling since it was possible to get a ton of returns through them.
In order to regain his reputation as a lawyer, Gi obtains a temporary teaching job at Chunmyung under an assumed name, Gi Kang-jae.
Of course, the stock market plummeted after that and Du-sik got to know that he invested in a fund that he had not recommended.