In the 20th episode of Korean drama "The War of Money", the story tells that the fund manager takes the road of high-interest loans and uses his wisdom to help the poor who are in trouble because of usury.
The two series I recommend are both Korean dramas. In fact, this is the way Korean dramas are played now.
More and more widely, the number of sets is mostly between 18-24. On the contrary, I think Korean dramas are more concise than those in continental drama, Hong Kong and Taiwan.