The Truman Girl Cai Xiaoai, who suffers from a rare disease, meets the tragic but determined girl Gu Eun Zhao, the gentle and considerate senior Song Canhe, and the quirky Lu Haoyu. The four of them continue to grow through a series of difficulties.They always helped Cai Xiaoai to expose the lies behind the saboteur, and with the efforts of everyone, Cai Xiaoai regained her health. In the end, the four of them shined for their own lives.