Zhuo Xinyi followed his mother, Zhuo Yan, to live in seclusion in Guanyue Valley for eighteen years. Suddenly one day, Zhuo's mother received an arrow. After reading the content of the letter, she immediately asked Xinyi to escape from the secret passage and find the Cangwu ancestor. Xinyi didn't know what happened eighteen years ago? What will be waiting for him next? Will he get the answer he wants?