Bian Que, a traveler with superb medical skills, agility and liveliness, but a secret, turns into another person every month and cannot control it. Therefore, he is ostracized by his family and hunted by the world.After she met Jiang Xinbai, she found that he was the only one who didn't care about her appearance changes, so she developed a crush on him.She decided to follow him to investigate the case, and at the same time, she also wanted to find out the reason for her transformation.