1942, there was a fierce battle between Songjiawopu, the headquarters of the Eighth Route Army Independent Brigade in northern Hebei, and the Japanese army. The independent brigade in northern Hebei, which is famous for its bravery and good fighting, was miraculously killed in less than an hour of fighting. Although the Eighth Route Army hit back at the Japanese aggressors, shattered the Japanese plot to destroy the guerrilla areas in northern Hebei, and finally made the Japanese spy chief Yamada Shi, who instigated the bloody battle in Songjiawopu, commit suicide by caesarean section, but what caused this strange and uninhabited battle? This became a mystery in the history of Shanxi-Chahar-Hebei War in North China Theater during War of Resistance against Japanese Aggression's period. In 1960s, there was a nationwide upsurge of going to the countryside, and young intellectuals moved from cities to all parts of the motherland. Li Xiong Jr., Wu Xinkuan, Xin Lili and other students also actively responded to the call and came from Beijing to the Songjiawopu Brigade of Liugongzhuang Commune in SHEN WOO County, Chengde, Hebei Province to jump the queue. An accidental discovery made educated youth interested in a tomb of martyrs at the entrance of the village.

What they didn't expect was that this isolated mountain village was involved in a foggy history during the War of Resistance against Japanese Aggression period. And this period of history is inextricably linked with this tomb at the entrance of the village. ...

During the War of Resistance against Japanese Aggression period, in this remote and quiet mountain village, a young man named Qiao Deshan, alias Jingcun, of the Eighth Route Army Independent Brigade, led the Songjiawopu soldiers and civilians to win many battles against the Japanese aggressors' encirclement and suppression, and became a legendary figure that frightened the Japanese aggressors. However, not long after, on the eve of the Japanese bloody battle at Songjiawopu, Qiao Deshan was publicly declared as the chief culprit of colluding with the Japanese aggressors, luring wolves into the room and defecting to the enemy, and was executed before the fighting started. After liberation, an officer who asked not to be named led the troops through Songjiawopu, which had been restored calm, insisting that Jingcun, who was shot that year, was an anti-Japanese hero, and personally asked the villagers to build the tomb of the martyrs for him. Although everyone was full of doubts, according to the instructions of the head, the tomb of Jingcun was changed and a stone tablet was set up.

Things have become more suspense since then. Is the "Jingcun" buried in the Martyrs Cemetery a traitor? Or a hero? Did you die with grievances? Or do you deserve it? Who is this "boss" who refuses to be named?

Around these doubts, educated youths with a strong sense of mission and revolutionary spirit have the courage to uncover the lid of the class struggle in Songjiawopu in the face of right and wrong, and return history to its true colors. With the support of the commune and the revolutionary committee of the brigade, the educated youth shuttled through various libraries and archives, trying to dig out the truth of history in a few words.

Through those dusty files and lost memories, Li Xiong Jr. gradually approached the hero who was regarded as a traitor; His wisdom and courage, his helplessness and grievances, his struggle and persistence in the whirlpool of history are truly restored to people bit by bit through those dusty records. ...

In the investigation, the educated youth gradually found that the independent brigade was not uninhabited in the battle of Songjiawopu. With the peeling of the fog, another mysterious figure, Ma, the former political commissar of the Independent Brigade, gradually entered the sight of educated youth.

At that time, he and Qiao Deshan (alias Jingcun) were brothers fighting side by side, but it was he who put Qiao Deshan on the traitor's guilt seat. He was captured several times and was safe and sound, and made great contributions to the war neutrality. However, after the victory of the Anti-Japanese War, all his information came to an abrupt end, as if a horse had disappeared from the world overnight. ...

With the deepening of the investigation, the wonderful fighting life and rich and detailed stories of the independent brigade in War of Resistance against Japanese Aggression were revealed one by one. The twisted human nature, complicated emotional entanglements and complicated and changeable times intertwined with them affected the nerves of the educated youth.

By consulting a large number of historical archives, the original vague and intermittent historical clues gradually became clear, and the educated youth admired "Jingcun" more and more, and gained a new understanding of the cruelty of struggle and the complexity of human nature. They strongly feel that the horse has not disappeared, and finding this mysterious figure can make all the truth come out. However, they never imagined that the final truth was so unbearable. ...

Educated youth jumped the queue and participated in the "revolutionary practice" for more than two years, and their feelings and world outlook are quietly changing. When the passion gradually faded and the temptation to go to college and return to the city appeared in this group, fifty or sixty educated youths also had strong contradictions and conflicts around the question of taking root or returning to the city.

The main line of this drama is to explore, show and decrypt the historical truth, and at the same time, it is accompanied by interesting and thought-provoking stories of educated youth. Two narrative clues stand side by side, forming a multi-point, suspenseful and interesting story cluster.