Appa Sijibga? 

Gong U-Jin is a passionate salesman at Bubble Doll, a doll toy company for girls! You fell in love with a married man with a child you met by chance? Gong U-Jin and Lee Do-Hyeon's relationship develops due to successive coincidences. ① A married man ② The father of a child ③ A lot older ④ Straight, maybe? Even though he can see the mountain he has to overcome, U-Jin can't control himself, he's still attracted to Lee Do-Hyeon... What will this couple's fate be?