*Scarlet Heart: Ryeo au* When five friends are sucked into an eclipse and transported back hundreds of years to Goryeo times, they're not sure what happened. Stuck in a strange world in a strange time, they can only hope to be able to go back. What if, in the end, they can't go back? What if they realize their true purpose in being sent there? And what if that true purpose was to prevent a war of brother on brother?