Dangerous Addiction: "Did you husband find out? Are you alright?" "I don't care. I just want to do this all day". Ga-hee appeared in front of Seong-min who was bored running a book store after retiring. Ga-hee runs a ballet school and wasn't on very good terms with her husband, which led to her and Seong-min falling madly in love together. They know they shouldn't be together, but that's what makes everything even better. Later on, their love reaches the point of destruction...