In 1983, Zhou Zhengyang is reborn back to the very day his fiancee, He Lijuan, takes the blame for Xu Jianbin's crime. In his past life, his false testimony led to Xu fleeing and himself being pushed into the water. In this life, he remains silent, letting He Lijuan give herself away through her lack of understanding of the classified camera's details. The case escalates to espionage, and He Lijuan and her mother try to coerce Zhou Zhengyang into changing his statement, to no avail. Finally, the truth comes to light, the criminal is sentenced, and Zhou Zhengyang guards his future and dignity.