When they were young, the heroine Lan Rong's brother went swimming in the river with the male lead Lu Tanqing but unfortunately drowned. The heroine's mother was devastated and became dementia after a suicide attempt. The 6-year-old heroine and her demented mother moved into the male lead's home, and Lu Tanqing, who was 2 years older than her, became her brother.
When he was in college, every time he asked Qi Jialei to treat him, he would always say, "Don't worry, you will never be able to feed me for the rest of your life." At that time, Lan Rong always smiled, thinking it was just a joke; and every time he said this in a joking tone, he was extremely sincere in his heart. In fact, the truth was hidden in the joke, but some people would never understand.
After graduation, the two separated. Two years later, when attending his brother's wedding, he met Qi Jialei who had returned. He even injured her. He smiled and said: "If you are lame, you are lame. In the worst case, I will support you from now on." It was still the same joking tone in college.
Later, she finally decided to be with Qi Jialei, but learned that Lu Tanqing had stomach cancer. Her love rival Gu Ling's father and Qi Jialei's mother told her that they could send Lu Tanqing abroad for treatment as long as she was willing to leave Qi Jialei. Between love and family affection, she chose the latter. When she left that city, she looked at the floating clouds in the sky and suddenly felt that she had entered a castle called Sadness, and she would never leave the city again.