This book tells the life experience of Zhang Luming. After he failed the college entrance examination, he joined the army and joined the special forces due to his own efforts. One of the tasks led to Zhang Luming leaving the special forces and his former comrades. Due to various reasons, he joined a terrorist organization and even he did not know that he was an undercover agent. Identity, he experienced wandering on the edge of life and death again and again. He was confused and lonely. When he was most helpless, his former boss appeared and clarified his identity, allowing him to finally find his own direction in the loss. So he relied on his witty mind and firm and brave character to nip the entire terrorist organization's conspiracy in the bud.