A genius investor, Ha Si-heon, amasses hundreds of billions of won in wealth on Wall Street.
But just as he is dying from a rare disease that even money cannot cure, he regresses to ten years earlier, when he was a rookie on Wall Street.
Realizing that he needs an astronomical amount of money to develop a new drug capable of curing his disease, Si-heon begins building a massive fortune once again for the sake of survival.
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