The main character, Xu Muyun (徐暮雲), was adopted by Xu Shu and raised in the Kingdom of Wei. Muyun grew up with his childhood friends Lanyin (蘭茵) and Zhang Gao (張誥) in the house of Zhang He, and the three youngsters vowed to fight for their homeland and bring about prosperous days together. Through his journey, Muyun came to a new level of maturity, learned of his true identity, realized the meaning of duty and friendship, and witnessed the ruthlessness of war.