During the Qingli period, in order to avoid war and maintain peace and stability among all ethnic groups, the Northern Song Dynasty trained young secret agents in the name of the Secret Pavilion. After strict selection and examination, the six young men, Yuan Zhongxin, who is smart, Zhao Jian, who is beautiful and clever, Xiao Jing, who never kills, Wang Kuan, who never lies, Xue Ying, who doesn't like to communicate, and Wei Yanei, who has a cheerful personality, formed the Seventh Chamber of the Secret Pavilion. After experiencing life-and-death missions again and again, the young and ignorant boys gradually grew up. They united with each other and used their blood and loyalty to defend peace and eliminate the disasters facing the Song Dynasty. The young men, who were covered with wounds, can finally embark on the road home. They fight for their country and have no regrets. At the same time, they also believe that in the years to come, there will be more young people who fight for their ideals and don't know how to retreat. The world is always lit up by such young people, and that is the light of hope.