The Crown Prince's Beloved

After time-slipping into the past, So Ji-ae spends a night with Crown Prince Seok Jang-ho of Jinan and returns to the capital six years later with her son. When mother and child are repeatedly tormented by Princess Ha Yun-seo, Seok Jang-ho comes to their aid, and the two gradually grow fond of each other—only to discover they were already lovers long ago. He also learns that the son he has been desperately searching for is right beside him, and that So Ji-ae is the true princess...