Qin Shangdong met Su Muyang for the first time. They were classmates. They fell in love for the first time, but they didn't know that they were from the wrong roots.
She suddenly appeared in his house. It turned out that her surname was not Su, but Qin, like him, and her name was Qin Muyang. From then on, one was the brother and the other was the sister. Was it a mistake of the previous generation, or was it a mistake of this generation?
She unexpectedly discovered that her mother had been brutally murdered by his mother. She felt resentful and tried every means to seek revenge. As a result, she and he fell in love and killed each other.
They had known each other since childhood and were childhood sweethearts. They lived in love for each other but could not admit it. When he saw her for the last time, she could no longer see him. Mu Yuan lay in Qin Shangdong's arms with his eyes closed, muttering to himself: "I hope I can stop being your sister in the next life." Qin Shangdong hugged her tightly, but couldn't bear to tell her the truth.