In Shanghai in 2024, pet doctor Kang Chen works in a 24-hour pet hospital. He is professional and gentle, but he seems a little out of place in the bustling city because of his ordinary family background. Lin Yu, the eldest lady in Beijing, as the sole heir of the Lin Group, lives a good life but is lonely inside. After her first love died unexpectedly three years ago, she pinned her emotions on Kang Chen, a pet doctor who was similar to her first love, and kept him by her side in the name of "personal doctor". Kang Chen noticed Lin Yu's emotional dislocation, but chose to endure it because of his deep love. He endured her hot and cold attitude for three years, filling her loneliness with professionalism and companionship. Lin Yu's family business rivals set up a car accident trap to seize power. At the critical moment, Kang Chen pushed Lin Yu away and was involved in traffic. After Kang Chen's death, when Lin Yu was sorting out his belongings, he discovered the health report of "briquettes" that he had silently recorded over the past three years, his casual mention of preferences, and the phrase "When you smile, it's like the hair of briquettes that has been exposed to the sun." In the dependence of Qiu Qiu and the warmth left by Kang Chen, Lin Yu finally understood that her feelings for Kang Chen had long gone beyond replacement. She began to face the love and guilt in her heart, learned to face loneliness and accept herself through loss, and finally regained the meaning of life with the memory and growth of Kang Chen.
