The heroine travels to an imaginary era, and a brother-sister love from different generations begins! Falling in love, but burying love deep in my heart because of ethics and status... Whatever I owe you in this life, I will compensate you in the next life. Is it God's will? I thought it was a foregone conclusion, but unexpectedly there was a secret behind it that could turn the whole situation upside down! Can we be together?