The story revolves around a five-man special team led by Zhou Xiao. Volume 1 is about the ice-breaking growth under extreme devil training, using humor to resolve difficulties, and inspiring each other with friendship; Volume 2 turns to border and overseas emergency operations, the team is full of doubts, and each other's inner fear and persistence are revealed at the moment of life and death, and humor becomes a weapon of resistance; Volume 3 is about the disbandment of the team members, the transformation of personal identities, the outbreak of social crises, and the friendship of comrades becomes the final destination. The book uses ups and downs of the story rhythm and humorous and witty dialogues to promote character growth and emotional sublimation, and finally usher in the reunion of the whole team and self-salvation.