Legend has it that there is a fairy island next to the Penglai Fairy Mountain. Jing Yiran, a 16-year-old boy with excellent medical skills who was just starting out, studied under the Penglai Fairy Mountain and then went down the mountain to perform chivalrous acts. He went all the way west to Chanzhou in the Central Plains, and made a living by collecting and selling medicines without any trouble. The master said that it is always right to act chivalrously and righteously, but it is a pity that good people are hard to do. Especially when he saved a ten-year-old rich girl Xiaoyan who had run away from home while collecting medicines in the mountains and could not get rid of him, he was really justified. Just sell it? That wouldn't make him a bandit, no, the boy's dream was to become a hero or a medical saint, so he had no choice but to take her to do heroic deeds first. Three days later, a family member finally came to ask for the baby girl. A jail sentence almost made the young man become a human trafficker. After the misunderstanding was resolved, the little girl finally returned home smoothly. At this time, a plague broke out. The boy relied on his medical skills to treat patients and practiced medicine in Chanzhou for a year. Three days later, the Battle of Chanzhou broke out. Xiaoyan's parents died in the battle. Xiaoyan became a refugee and was rescued by the boy again. When they met again, the young man had become a famous hero in the world. But she suddenly gave up her fame and fortune and lived in seclusion. After asking around, Xiaoyan finally met him. Along the way, the truth behind it was slowly revealed...