Lin Wan, the leader of the reconnaissance squad of the Chinese peacekeeping force, was on a mission in the Congo when he was ambushed in the rainforest and his comrades died. Traces on the scene were used to judge that internal intelligence had been leaked. She overcame PTSD (post-traumatic stress disorder) and cooperated with war reporter Gu Zhao to gradually expose the corrupt chain of weapons smuggling between high-level peacekeeping forces and local armed forces. During the process, he experienced crises such as evidence destruction, missing witnesses, high-level threats, and betrayal of comrades. Finally, he relied on his tenacity and psychological analysis skills to collect complete evidence, bring corrupt elements to justice, and seek justice for his comrades. At the same time, he completed the psychological redemption for his father's sacrifice and strengthened his original intention of "peacekeeping is not a slogan, but a belief guarded with life."
