It's the birthday of Yonhap, and Yonhap is having a party with his family. Yonhap's mother, Noona, and her son, Yonhap Jr., are planning the party. Noona wants to know what's going on, but Yonhap won't tell her. She's worried that she'll fall in love with her son's cousin, Jun-hyung, who's having an affair with her own son, Yeon-yong. She begs Yonhap to tell her son that when he's sober, they'll be able to have a drink together. But Yonhap refuses, saying that he'll have to go home and take care of his son. He's also on a leave of absence, and no one can figure out why.