Kim Taeyeon is a serial murder. He and his dongsaeng, Ham Eunjung(female), goes around cunningly and kidnap rich girls. Taeyeon is a kindhearted boy and feels pity for the ones that he captures. Eunjung on the other side is really attractive and cold in personality. Every teenager she captures to get money always fall for her. She despises them and lets them go home, with them promising to not tell anyone who captures them. The two serial murders are amateur and sometimes got hurt. 

They exchange love. Jealousy, coldness, separation, and angst