The spirit of Kang Gyung-Joon becomes transplanted from Seo Yoon Jae's human body. Seo-Yon-Jae is Gil Da-Ran that is engaged to school educator and actually really a successful physician. Gil so happens to be Kang Gyung-Joon's educator. More problems ensue when 30-year-old Seo Yoon Jae drops deeply in love.