Yin Jiro (Wu Meiqing) birds return to their nest and return to their hometown, only to find that there is an uninvited guest at home, ── University professor Okakura (Mikura Qi Jiannian). When Yinzheng left home angrily, he knew himself for thousands of generations in his childhood (decorated with 8,000 grass) unexpectedly paid a sudden visit. The two began to talk about interesting things in their childhood, and their feelings developed by leaps and bounds, but at the same time, Professor Okakura also had a secret affection for a thousand generations. How on earth does Yin, who is facing a love triangle crisis for the first time, advance and retreat?