Xiaobei (Yue Yunpeng), a young writer who is frustrated in reality, experiences a fantasy journey on a night when he hits a wall in reality and feels depressed. He travels through the early 20th century to save his ancestors who are in gang trouble, works with his ancestors who are taking the imperial examinations in the Qing Dynasty, fights against enemies with his ancestors in the Ming Dynasty, saves the world with his ancestors in the Jin Dynasty, and discusses the origin and meaning of life with Nuwa and Kuafu in ancient times. He witnesses love, gains confidence and responsibility, and grows up through the transformation of human nature. The fantasy journey is actually the release of his new book, which is dedicated to his mother and ancestors whom he has never met.