i have zero recollection of this but i know i watched it

Yoo Se-yeop (Kim Min-jae) is a genius physician for the royal family, but is expelled from the capital after falling victim to a conspiracy. He later meets an eccentric teacher, Gye Ji-han (Kim Sang-kyung) and a widow, Seo Eun-woo (Kim Hyang-gi) in the mysterious and beautiful Gyesu Village. He is reborn as a true doctor who aims to heal people's hearts, writing the prescription of happiness.