After his uncle's unjust takeover of the family company, Kang Min Ho grows up to be a successful, if not cynical investor who only cares about money. But when he undergoes a sudden heart transplant surgery, Min Ho literally has a change of heart when he inherits a warm and compassionate heart. In the midst of seeing the world anew, including falling for the kind Kim Soon Jung, Min Ho must mitigate his newfound personality with the demands of his cutthroat career.
Min Ho's father owned a successful company before succumbing to a fatal heart disease, leaving the company in the hands of Min Ho's uncle. Min Ho is determined, while fighting the same heart disease, to climb to the top of the business world while he still has time, and exact revenge on those that took advantage of his dying father.
When Min Ho's last gambit fails, his heart gives out. Dong Wook searches for the missing executive, but finds more than he bargained for.