Seo Jeong-yeon

A passionate fling in Jeju ends abruptly — until fate reunites an heir and a young woman when she joins his company, disguised as a married mother.

An ignorant but strong-willed man and an upper-class woman who struggles through life, work to fall in love.

Korean emperor Lee Gon tries to close the doors to a parallel world which was opened by demons; a detective tries to protect the people and the one she loves.