Long time ago in the lost kingdom that nobody ever heard of hold an Queen who is loyal to her king. She beared an healthy, wealthy Prince [Park Sunghoon]. Little did she know that her own beared child have a bad fate of living. Due to losing her spot of being favor by her beloved husband which the king she hidden the truth from him. Therefore, when the prince [Park Sunghoon] grew up to be a full grown man his mother left him a beautiful rose quartz necklace casted a curse into it awhile she caressed her last word to him. "The only girl that truthfully love him shall live and be blessed with him nor be killed by the necklace of love curse." He grew to understanding to be coldhearted and open-minded to anyone to test the necklace to be arranged to him by soul curse. One day, Yang Y/n went to the old western museum thrift store to buy a souvenir to bring back home with her to South Korea. She found a beauitful necklace and brought as the store owner warn her about the previous customers that purchased have been murdered by the necklace as it was placed as refund and locked mirror wall barriers. She was clueless,mindless, & careless thought that nothing was wrong still brought it. Until, one exhausting morning she slept and dream about an lost old kingdom turning to encountering an mysterious prince[Park Sunghoon]. Every dreams she have of him was good,bad, & romantic as she & him fell deeply in love with each other. However, they got separated due to time travel in dream into reality of the future. Will they end up together? What will be resolved to their releationship ?