**Childhood Bond**: Xu Chen and Xu Xinghe met in an orphanage. Xu Chen was introverted and sensitive, while Xu Xinghe was sunny and cheerful. The two were inseparable and became each other's only family. Xu Chen was adopted by a wealthy family at the age of 12 and was forced to be separated from Xu Xinghe, promising to come back to him.
- **Intertwined Destinies**: 15 years later, Xu Chen has become a successful architect but is emotionally closed off, while Xu Xinghe is an award-winning war reporter but is lonely inside. A photography exhibition reunited the two. Among the "home" themed photos displayed by Xu Xinghe, there were wooden toys that Xu Shen gave him as a child.
- **Confrontation in the Heart Wall**: Xu Chen is cold and refuses to recognize each other, but Xu Xinghe insists on breaking into his life. Xu Chen discovered that Xu Xinghe had always treasured all the items that symbolized their friendship, but deep down in his heart he had never truly forgotten this childhood friend.
- **The truth emerges**: When Xu Xinghe investigated the car accident of his adoptive parents, he discovered that he was related to Xu Chen's company, and the relationship between the two fell to a freezing point. Xu Chen discovered the conspiracy of company partner Zhou Yan and took a risk to obtain evidence but was attacked.
- **Life and Death Test**: Xu Xinghe took a risk to rescue the injured Xu Chen, and the two re-established trust during their escape. Xu Chen finally confessed that he had been secretly searching for Xu Xinghe for fifteen years and anonymously donated money to the orphanage on his birthday every year.
- **Joined to fight back**: The two teamed up to expose Zhou Yan's criminal network. In the process, Xu Chen showed amazing courage to protect Xu Xinghe. After the crisis was resolved, Xu Chen used the reconstructed model of his childhood orphanage to confess to Xu Xinghe: "You are the only person I don't want to lose again in this life."
- **New starting point**: The two co-founded an architectural design studio, with Xu Chen designing and Xu Xinghe responsible for the story and humanistic perspective. On the opening day of the studio, Xu Xinghe gave Xu Chen a time capsule, which contained a note from their childhood that they agreed to "be together forever."
Purpose: Seize friendship and don't let it become a regret