"Scarlet Heart: Ryeo" is a 2016 South Korean television series based on the Chinese novel "Bu Yi Shen Wang" by Ding Mo. The drama stars IU as Go Hae-Ryung, a young woman from the present day who travels back in time to the Goryeo era, and Yeo Jin-goo as Wang Won, the crown prince of Goryeo.

When a young boy falls into the water and begins to drown, Ha-jin's compassion outweighs her despair. She dives in to save him. However, as she is pulled back toward the surface, a occurs. This celestial event creates a cosmic rift, dragging Ha-jin deep into the water and across time. Arrival in Goryeo: The Royal Bath Encounter

Terrified and confused, she flees the scene and is eventually found by her maid, Chae Ryung. Ha-jin soon learns she is now inhabiting the body of , a 16-year-old noblewoman and cousin to the wife of the 8th Prince, Wang Wook . Because she has no memory of this life, her family and friends believe she is suffering from amnesia due to her near-drowning. Meeting the Princes

Here’s a — also known as Moon Lovers: Scarlet Heart Ryeo .

Hae-Ryung finds herself in the imperial palace, where she meets the crown prince, Wang Won (Yeo Jin-goo). Initially, she is confused and disoriented, but she soon tries to adapt to her new surroundings.

Ha-jin opens her eyes in a different body, in a different century: . She now inhabits the form of Hae Soo , a young noblewoman from a fallen family. Disoriented and terrified, she quickly learns she’s been thrown into the heart of the royal court, where the powerful King Taejo is ailing, and his many sons are circling the throne like wolves.