Yoon Seung-jae, the man who changes the client’s past by going back in time. One day, he opened his eyes and saw himself in his past. Since then, he went back 30 years ago to meet Sujin. as if he was drawn in. “Mister.” “Call me again.” Was it you who had been calling me for a long time? It may have been this way from the moment he found out that it was Sujin who called him here. It was just that night. A night of comfort that he couldn’t even remember because it was so long ago. So suddenly, he felt lonely because he had been alone for a long time. Sujin, who had her mouth closed fearlessly and was very nervous, was shivering.