Gu Yaodong in the play is a white boy in the workplace and a passionate young man full of patriotism. Chen Xianmin, an underground worker of our party, was arrested and imprisoned because of the clue he stumbled upon. Later, Gu Yaodong learned that his so-called evidence was actually wronged Chen Xianmin. This simple and kind-hearted young man thinks that he caused this unjust, false and wrong case, so he is going to rescue Chen Xianmin from prison alone.
With the secret help of Xia Jicheng, Gu Yaodong finally came to Chen Xianmin's prison, but Chen Xianmin refused Gu Yaodong. Because he doesn't want to see this simple and kind young man, because his relationship has sacrificed his future and life. Chen Xianmin recited a poem by Chief Le to Gu Yaodong. Although Gu Yaodong failed to save people, these poems lit up his heart.
In fact, The Last Month Of Summer knew all about Gu Yaodong's plan, but in order to educate the young man and educate him to grow up rapidly, he chose to help him secretly. Later, with the joint efforts of Xia Jicheng, Shen Qinghe and other underground workers, Chen Xianmin was finally rescued. After this incident, Gu Yaodong strengthened his determination and confidence in upholding justice.