Margin Call is a word from the world of trading, which means one's own account, Because the value of his property has fallen below the specified value Do you add more money so that the account is not closed? A rule that determines whether all assets are sold. In other words, if you don't want to lose your life and become dull due to a drop in value, you should sell everything. The story with this title is based on the idea of a company that went bankrupt during a global economic crash that happened around 2007-2008. In the story, such as stocks, An employee of a close-knit investment firm that deals in things like bonds forewarned that a recession could happen. Because in this world, the price values that used to be Because we can predict what will happen in the future by looking at the trading records. We know that it will happen, so we plan how to avoid this failure. The faster you can make a decision, the less you can lose, so the decision is confirmed overnight. A person who uses his head more than others in a complicated world, A person with deep intelligence It is an interesting finance car that shows how people can survive even if they fall apart.