Ye Beichen has lived in seclusion in Kunlun with his master since childhood, practicing diligently for twenty years. After mastering his skills, he follows his master's orders to go down the mountain for real-world experience. Newly entering the city, he is slightly unfamiliar with modern life, yet with his extraordinary skills and kind nature, he successively resolves strange events at construction sites, urban suspense cases, and the crises of those around him, thereby making friends such as Qin Lan and Lin Wanqing. Along the way, while helping others, he gradually comes to understand the warmth and coldness of human relationships as well as responsibility, and even discovers unknown mysteries hidden beneath the peaceful city. Thus, the Kunlun youth embarks on an urban cultivation journey of guarding goodwill, solving bizarre events, and growing up.