The protagonist, Ahn Ji-heon, is murdered by hitmen the day before he is to receive a massive sum of 19.5 billion won. When he opens his eyes again, he instinctively realizes that something he has only seen in movies is happening to him. Time travel that goes backward by one day! When he wakes up, it is not tomorrow, but yesterday. However, the novelty is short-lived. With the 19.5 billion won within his reach but slipping away by one day at a time, Ji-heon decides that time travel or not, he must escape this phenomenon by any means necessary. “I can’t just sit here and become a newborn baby. I will get my 19.5 billion won back no matter what!!” The tearful journey of protagonist Ahn Ji-heon to escape ‘D-Minus’ begins.