Eunhyuk and Hyoyeon we're bestfriends since they we're neighbors...Eunhyuk had a big crush on Hyoyeon but he didn't tell her...Hyoyeonhad a crush on Eunhyuk too, suddenly Hyoyeon had to move to S.E.O.U.L ...She had to left Eunhyuk because Hyoyeon's dad got a job...after 10 years Eunhyuk move to S.E.O.U.L for work...then he met a beautiful girl... but he didn't know it was Hyoyeon...after Eunhyuk's engagement with Gyuri! Eunhyuk was force to engage with Gyuri by his dad since his dad is bestfriend with Gyuri's dad