Description：The only wish of Yang Can's (Zhu Yuchen) father before his death was to see his son join the special operations team. Yang Can fulfilled his father's last wish with his own actions. In the special operations team, Yang Can met a female instructor named Na Min (Wang Like), and the two had a verbal battle and were at a stalemate. Afterwards, Yang Can met comrades such as Mao Xiaobo (Li Haoxuan), Tasi (Zhang Jing) and Lao Hei. In the arduous training and crisis-ridden actual combat, a group of like-minded partners forged a deep friendship. Na Min's ex-boyfriend Li Jianfeng (Wang Ban) returned to the company, and his return disturbed the mood of Na Min and her good friend Shi Yu (Sun Yiming). At the same time, Yang Can and Na Min did not know each other, and as time went on, they actually collided with different sparks. A group of passionate young people waved their swords to defend their country.