Urban youth Lin Qianmo accidentally traveled to the martial arts world a thousand years ago and lived in the treacherous world of Bo Yun. He first entered the world and was involved in the power struggle between Tianji Pavilion and the Black Scarf Sect. He witnessed the cruelty of the disputes and the complexity of human nature. As he continues to explore and grow, he teams up with like-minded people such as Liu Ruyan, Qin Yuesheng, and He Ming. He not only shoulders the heavy responsibility of saving the world, but also solves the mystery of personal time travel and doubts about his life experience. In the competition between multiple forces, friendship, love, and betrayal are criss-crossed, and choices, sacrifices, and redemptions arise in the tide of rivers and lakes. Multiple story lines are intertwined and progressive. In the end, the protagonist uses growth and faith to calm the turmoil in the world, return to himself, and achieve self-salvation across time and space.