The Chair of Nakwon Hotel, Ja Geum-sun, yearns to meet her family left behind long ago in North Korea. There is tension in her South Korean family: her grandson Se-jun tries to sell the hotel, while granddaughter Se-yeon fights to stop her brother. Meanwhile, someone seeks out Jae-heon, an unknown theater actor, for an unusual task.

As Se-yeon tries to stop the disposal of hotel, her ex-fiancé, Dong-je, appears. Meanwhile, after accepting Sangcheol’s proposal, Jae-heon considers who to recruit to help carry out his mission. The curtain finally rises on a grand play, created and performed for one particular person.

Geum-sun greets the arriving couple, Jae-heon and Yoonhee, with a face full of excitement and touched emotion. However, each member of the household has their own opinions and feelings about the newcomers, especially since Jae-heon will receive a stake in the hotel. Se-yeon takes Jae-heon on a tour of Seoul, hoping to influence him to her side.

Jae-heon and Yoonhee try their best to maintain their cover as Geum-sun’s grandson and his wife. They put their heart and soul into acting as Ri Moon-seong and Jang Jinsook, trying to bring joy to Geum-sun while avoiding the suspicions of her family and others who could reveal their true identities.

Se-yeon persuades Geum-sun to have Jae-heon work at the hotel. Since he has plenty of experience working in part-time jobs, Jae-heon quickly adapts and shows his talents. But not everyone welcomes Jae-heon, and they are trying to make things difficult for him.

Se-jun accelerates his plan to sell the hotel. Se-yeon meets her ex-fiancé Dong-je, who owns a 4% stake and will become the casting vote for the disposal of hotel Nakwon. Meanwhile, Jae-heon, Yoonhee, Se-yeon, and Dong-je have an unexpected dinner together.