1938, a great event that shocked the academic circles in Beiping happened and was trampled by the Japanese army. In order to suppress the student movement, the Japanese puppet authorities arrested Su Zhen, the backbone of the student union. Peng, the son of Peng Zu Kang, the director of Beiping Nissin Trading Company, who has a crush on him, risked his life and took advantage of his family ties to save him. From then on, Peng and his lifelong love entanglement began. However, a marriage proposal once again tore the relationship between them. In fact, the Japanese released their father Su, a famous barrister in Beiping, by taking advantage of the marriage with him. Forced by Peng, he ran away from home and secretly went to Yan 'an, the revolutionary youth's yearning base. Peng couldn't find it and fell ill. Out of sympathy, Guan prompted Peng. When Peng learned that he was going west, he made up his mind that he would find it no matter whether he was alive or dead, no matter the ends of the earth. Xi is a transit point to Yan 'an. Due to the arrangement of the school underground party organization, Su Zhen quickly passed the political examination here and stayed in the office to help. However, not long after, I met Peng who followed me in the street, but Peng and others mistakenly entered the Kuomintang conscription station and saved him without hesitation. At the same time, the friends present were also shocked by Peng's true feelings. The joy of reunion was soon diluted by the oncoming difficulties. Because of Peng's birth, Yan Dongshan, the chief of the Political and Legal Department, was reluctant to let go. Seeing that he is going to Yan 'an, Peng is anxious and angry, but in any case, he can only bid farewell to the wandering figure in the dusty sky with tears. Hard days tormented the inexperienced young man. Fortunately, Peng has met Wang Xinyu before. Wang Xinyu also stayed in Xi 'an because she lost her recommendation letter. He loves literature and art, and he felt wasted when he came to Xi 'an. With their own ideas, Peng and Wang Xinyu decided to go to Yan 'an by themselves. Unexpectedly, however, they were caught in He Laoqi's hut on the way. He Laoqi tried to squeeze money out of them, but he couldn't, so he wanted to kill them. Thanks to Qin Chun, the wife of He Laoqi, Peng promised to escape with Qin Chun, but in the end he and Wang Xinyu fled to Yan 'an because of the dangerous situation. With regret, Peng finally met in Yan' an. Peng has been nervous because of Qin Chun's guilt. He comforted Peng and presented his own hand-sewn military uniform. In order to make him drink coffee, Peng went to a small mountain village to find goat milk. He didn't want Yan Dongshan to find the enemy's radio waves in the small mountain village where Peng was looking for goat milk. Although Peng was quickly ruled out as a suspect, he didn't want to tell the truth about his escape from He Lao's Seventh Army, which made Yan Dongshan associate. Peng is going to start military training. He got into trouble because of his military uniform. Su Zhen was affected again, but she never gave up, and decided to leave Kangda and go to the training class to accompany Peng Deng Ke. On the other hand, Peng left Yan 'an to find Qin Chun, clarify the truth and rescue Qin Chun. Stopping Peng in the middle, he forgave him after telling Qin Chun's crime, and their differences were solved. There was an air strike in Yan 'an that shocked China and foreign countries. This is the Japanese people's revenge for the fiasco of the Pingxingguan campaign. During the bombing, Zheng Dalong, head of the independent regiment, rescued Su Zhen. Peng was also praised for saving the kindergarten children. With the support and encouragement of Commander Xiao, he finally got the opportunity to study in Kangda University. Peng can finally be with him. At a bonfire party after coming to Kangda, Peng sincerely and loudly expressed his feelings to Su Zhen in English. However, tell Peng that it is too extravagant to talk about love in the face of death and sacrifice. Xiaoyan, the daughter of Zheng Dalong, became attached to Su Zhen because she lost her mother. Wang Xinyu, who was studying abroad, wrote a drama about Swallow, which caused a misunderstanding with Peng. In order to expand the base area, the Central Committee of the Communist Party of China organized a task force to reduce rent and interest rates in border areas. Peng wanted to ease his feelings with him and volunteered to join the task force. Want to make up for the emotional rift between herself and Peng followed. The land reform in Hejiabao is extremely difficult. Captain Peng, Ji and the die-hards fought wits and braved each other, exposing the schemes and intrigues of the die-hards to frame the Eighth Route Army. Patiently guide the masses and educate the rich man He Baoshan to implement the policy of reducing rent and interest. Peng's talent was recognized by He Baoshan, who agreed to implement the policy of reducing rent and interest. However, due to Peng He's negligence, He Baoshan was ambushed by He Laoqi. In order to save Peng He, Captain Ji died heroically. Peng He couldn't forgive himself, and their feelings came to an end temporarily because of the death of captain Ji. In order to avenge captain Ji, Peng volunteered to follow Zheng Dalong to the battlefield. The two men forged a friendship between life and death in the fire, but they refused to give in to each other out of love for Su Zhen. Xiao Yanzi, the daughter of Zheng Dalong who ran away from Yan 'an Nursery School, was pushed to the brink by accidentally seeing the telegram of special agent Liu Bian. The news of the disappearance of the swallow kept my sister Xu awake all night. Sato, a Japanese prisoner of war escorted by Peng, is a communication expert. He put forward the best scheme to decipher the password of the enemy station that has been echoing over Yan 'an. After consulting with Yan Dongshan, Guan assigned Peng He to Beiping as a fake husband and wife, and used Peng's relationship to get the key equipment for decoding: the radio detector. When Fang Yi, who was regarded as a businessman by them and had been chasing Ni Pei, escorted them all the way to Peiping, they realized that Fang Yi was an enemy agent of the Ministry of Industry of Peiping, and they were very shocked. Peng He returned to Peiping again, adapted to each other in embarrassment and melancholy, gradually understood each other's thoughts and resolved previous misunderstandings. At this time, Jia Peng proposed to hold a grand wedding for the two. However, because the Japanese spy Liu, who was lurking in Yan 'an, changed his newspaper, Xiao Ye began to notice that he had just returned. At the wedding, Peng pretended to be drunk and succeeded with Fang Yi. For the sake of safety and delaying the Japanese, Fang Yi sent Peng back to attend the wedding, and was unfortunately arrested after completing the purchase and handover of musical instruments by himself. The news of Fang Yi's heroic sacrifice came. Before he died, he asked Peng to take care of Ni Pei. Looking at Ni Pei, who is sad and sad, Peng vowed to stay with this sad and weak woman all her life to make up for her pain. When he learned that Ni Pei was terminally ill and his time was running out, he told Su Zhen that war made it impossible for lovers to get married, but love would still be with him for life. Su Zhen got the message and decided to help Peng and Ni Pei personally. The army needed cultural teachers, and Su Zhen took the initiative to follow Zheng Dalong to the army. With the deepening of contact, feelings developed between the two. At this time, Ni Pei wrote to tell her that she could not accept Peng's feelings. In order to get Ni Pei to accept Peng, Su Zhen agreed to Zheng Dalong's courtship and decided to find the swallow to live with. He Laoqi accidentally discovered that the little girl brought back by Qin Chun turned out to be Zheng Dalong's daughter Swallow, and she took refuge in the Japanese. He Laoqi used swallows as hostages to force Zheng Dalong to submit. But Qin Chun secretly passed the news to Wang Xinyu, and agreed to hand the swallow over to Wang Xinyu at the appointed place. Zheng Dalong died in Su Zhen's arms during a fierce battle with the Japanese army. Wang Xinyu took the swallow to Su Zhen. At this time, an infectious disease broke out, and Ni Pei volunteered to go to the epidemic area. In order to save the villagers, she gave the medicine left by Fang Yi to her fellow villagers, but she relapsed and died. 1946, end of War of Resistance against Japanese Aggression. However, with the outbreak of civil war, Peng He was sent to different posts, and their shoulders were staggered again, which also made them miss their marriage for the rest of their lives. At the turn of the century, accompanied by his son, the elderly Peng went to Yan 'an. In Yanhe, he met the little swallow who was his mother. Swallow took out the old-fashioned camera given by Peng and recorded his concern and nostalgia for Peng for decades. She said Peng was the love of his life. Although they didn't get together in the end, this precious emotion and yearning accompanied her all her life, and she felt extremely happy. Yanhe, pagoda, this hot land bearing countless youth ideals, witnessed this love that traveled through time and space.