Plot synopsis: Young-Hee lives alone at an apartment. She has separated from her pilot husband Sang-Jin, because he had an affair. Meanwhile, Jung-Hyo is pregnant, but her boyfriend wants her to have an abortion. Jung-Hyo goes to Young-Hee’s apartment and tells her she will stay there until she gives birth. Young-Hee is her boyfriend's mother. Living together, Young-Hee and Jung-Hyo fight with each other, but also come to understand each other.