Tang Ning, a secondary cancer patient, has shown early signs of secondary cancer since she was a child. Although there is a shadow in her life that she doesn't want others to know... (Ask for the area of the shadow), her innate optimism and maturity make her life full of sunshine and sweet songs. In this story, there are memories unique to youth (Little Overlord, Mai Lisu, Same Song, New Concept, Li Lei and Han Meimei...), Emotional entanglements belonging to adolescence, and exciting student days with Chinese characteristics. In the era of exam-oriented education and mass production training, Tang Ning is like a maverick pig, dreaming of colorful dreams.