This is a contest of youth. When a group of arrogant and rebellious post-90s students meet the experienced and resolute post-80s instructors, a war of "wits and courage" and "open and hidden arrows" is about to break out. Cai Mi (played by Li Jiahang) and Fu Chun (played by Sun Shaolong) are a group of post-90s college students who are sunny, energetic, smart and naughty, and have distinct personalities; but they also have some characteristics of post-90s: self-emphasis, rebellious personality, late maturity, lack of training, weak sense of responsibility and responsibility, etc. In order to improve themselves and hone themselves, in the last year of college before entering the society, they entered the 101 project, a special special training experiment project jointly organized by the school and the army, and were assigned to the 101 team. In the team, they experienced a completely different life from their original life. In addition to the training of physical and military projects, they also had training in world outlook and psychological quality, as well as learning and practicing relevant psychological warfare knowledge. During this period, they had constant conflicts with the military instructors, and their lifestyles, outlooks on life, and values were in stark contrast; their conflicts with instructors Yun Tianyao (played by Zhu Yawen) and Jiang Danchen (played by Wan Qian) and other psychological warfare experts of our army were upgraded to a battle of wits and courage, open and secret, and strange things happened one after another. All kinds of martial arts were performed, which made people laugh and cry, hateful and lovely. The strict training and assessment of the barriers inspired their fighting spirit and cultivated their tenacious spiritual qualities. The professional psychological warfare drills fully tested their psychological endurance and courage to defeat their opponents and their actual combat level... After several months of hard training, a group of post-90s college students such as Cai Mi and Fuchun have made rapid progress in mental maturity and personality integrity, which has become an unforgettable and vivid lesson in their life. The troops have also accumulated experience in the training of psychological warfare team members, and discovered and recruited a group of professional talents to join the psychological warfare troops.