The night Shen Zhiyao tore up his scholarship and took away Jiang Jin's student status, he couldn't get an explanation. The class sees her as a betrayer, and he disappears like a dream. Three years later, she became the school medical assistant and he returned as an international grants officer. When Lin Wantang's old case files were reopened, Qi Yao's anatomy notes showed blood stains, and Zhou Yang set fire to the forged experimental data in the auditorium - it turned out that the tearing up that night was the gear of fate finally starting to turn. They were all waiting for who could admit first: that loneliness should have been shared between two people.