The play is adapted from the novel of the same name by Mobao Feibao. It tells the story of how investment director Gui Xiao reunited with bomb disposal SWAT Lu Yanchen ten years later, and the two reunited and found their way back to loyalty and faith. Gui Xiao (played by Tan Songyun) and Lu Yanchen (played by Jing Boran) are each other's first love. After graduating from college, Lu Yanchen went to a foreign country to become a special police officer. At the same time, Gui Xiao's family suffered an accident, and their love ended without a disease. Ten years later, Gui Xiao and Lu Yanchen reunited and found that they could not suppress their longing for each other and got close to each other again. But the news that his parents arranged a marriage for Lu Yanchen made Gui Xiao uneasy. Lu Yanchen made a decisive choice. Gui Xiao understood that he only had himself in his heart from beginning to end. The two continued their relationship and registered for marriage. After marriage, Lu Yanchen was injured in a mission and fell into a coma. Pregnant Gui Xiao rushed to Lu Yanchen and gave birth to a daughter in the frontier city that Lu Yanchen had guarded for ten years. The family of three reunited safely and lived a happy life.