In the fresh and elegant landscape town, Lin Che witnessed her father's early death due to illness since she was a child, and developed a deep fear of death. While studying, he discovered an ancient scroll about "eternal life" and gradually embarked on the path of pursuing eternal life. Lin Che has a deep relationship with her childhood sweetheart Chu Yao. They have very different personalities and different views on life. Lin Che, accompanied by her friend Su Mu, traveled around the mountains and rivers, visited hermits, and sought answers from the alchemist Mr. Bai. As the "witness" of eternal life, Mr. Bai attracts many followers with his mysterious alchemy. In interacting with him, Lin Che gradually sees that behind the temptation of eternal life is endless loneliness and self-loss. As the pursuit deepened, Lin Che experienced countless tragedies and pain caused by eternal life. In the end, with Chu Yao's company and guidance, he understood that the beauty of life lies in its limitations and impermanence, let go of his obsession, and chose to spend limited time with his family and friends. With a fresh and elegant writing style, the novel shows human nature, choice and growth, as well as thoughts on the meaning of life.