Story about this girl who suddenly rings back her memory towards the guy she likes. She missed him so much and doesnt know where he dissapeared.  Song ji hyo:- A rich girl but the most generous and a dream girl to everyone, she is also pretty. Lee Dong Wook:- the person who Ji hyo had a crush with but mistaken as her enemy Kim Heechul:- Ji hyo's best friend and have some feeling towards Ji hyo Choi Yeo Jin:- Ji hyo's best friend and has a boyfriend name Choi ji