"The most delicious rice cakes are other people's rice cakes". Seong-Hyeon, who has just started a part-time job at a children's cafe, sees a young and pretty Eugene. Two people who seemed to have no contact, but who met again by chance. Eugene is bored with her life as a mother and still wants to be a woman. And Seong-Hyeon, who knows that she is a woman possessed, falls more and more in love with Eugene. The forbidden love between two people, which is more stimulating because it is unacceptable, begins to burn.