Moon Lovers - Scarlet Heart Ryeo (Hangul: 달의 연인 - 보보경심 려; RR: Dar-ui yeon-in - Bobogyeongsim ryeo) is a South Korean drama based on the Chinese novel Bu Bu Jing Xin by Tong Hua. It began airing on August 29, 2016 on SBS every Monday and Tuesday at 22:00 (KST) for 20 episodes
When a total eclipse of the sun took place, a 21st century woman, Ko Ha-jin (Lee Ji-eun) is transported back in time to the Goryeo Dynasty of Korea. She wakes up in the body of 16-year-old Hae Soo. There, she falls in love with the 4th Prince Wang So (Lee Joon-gi), who hides his face behind a mask and is given the derogatory label "dog-wolf" by others, making other people tremble with fear. Love, rivalry, politics, and friendships ensue between the handsome princes, in a fight for the throne, friendship, and love.