Choi Soobin, a handsome, famous, and of course rich CEO of a gaming company. Soobin and you divorced a year ago, when your son Ji-hoo was only seven months old. Every Sunday or holiday, Soobin would come to visit your apartment, releasing his homesickness while fulfilling his role as a father. Soobin would also often look after Ji-hoo if you were busy with your work as a doctor. In front of Ji-hoo, you two have to play the role of a good parent. The rest of you are just foreigners.