When Kang Seulgi visit the shrine of her bestfriends Ancestral home her eyes spotted something that takes her interest.....

A portrait of someone and a letter....

she cant even describe it but it seems there is something pulling her to get near it......

her bestfriend said the letter was written a long long time ago but the mystery that even her family doesnt know is why is it written in hangul when hangul didnt even exist back then.....

the letter is written by her great great great grandmother for her lover who they believe doesnt even exist at all.....

no one believes that the letter came from the ancient times and the letter is merely fake.....

but at that letter Seulgi notice something that shock her....

a small written mark on the letter made her feel different.....

at the same day after coming home from her bestfirend's house Seulgi got into an accident that change her whole life......

she woke up a thousand years ago from her real time and met this woman who has the same face as her bestfriend......