Eun-ji, who unexpectedly transferred to another school due to her father's local order, was separated from her best friends. Eun-ji tries to make friends with her friends from her transfer school, but she can't get along with her friends and she spends her school life alone. As time goes by, Eun-ji feels her loneliness and grows tired. Then, Eun-ji ignores her signal and gets into a car accident with a truck that rushes in. Eunji saw her parents crying while hugging my already cold dead body when I opened her eyes. Looking at her, she hopes that she does not want to die. She then asks her Eun-ji, who suddenly appears and asks her unidentified handsome man 'Joshua'. "Want to live? Then kiss me" Eun-ji swears to her dangerous contract with 'The Devil Joshua' with her first kiss to live her life again.