Drama also known as Time-traveller's Romance; In order to avoid the election of a concubine, the crown prince took the imperial guard out of the city to suppress the bandits. Unexpectedly, he was attacked by bandits on the way. During the escape, he broke into a dense forest and accidentally time traveled. She is a simple and ordinary girl who has been living in the antique shop left by her grandfather. Once she went to a mid-level villa to deliver calligraphy and paintings, she bumped into him. He was injured and fainted. After waking up from the hospital, he was shocked by the new world before him. At the same time, his abnormal words and deeds were mistaken by doctors for brain injury and stress disorder. Since his identity information could not be found, she could only take him home to take care of him. From then on, the two were tied together and began a life full of excitement and fun..."