Newlywed 'Yeon', who secretly imagined her husband into the male lead of romance novels, and newlywed 'I-cheon', who suffered from a secret (!) medical condition he could never tell anyone. To keep each other's secrets and to achieve true marital love, the two begin their own secret role-playing (?) newlywed life! A uniquely colorful Joseon-era newlywed diary unlike anything seen before!