After Zhen Li graduated, he came to Jinan alone. He relies on posting leaflet, sending and receiving courier parcel to make a living in the university campus. In his spare time, he likes to play guitar, play Tai Chi, study calligraphy and Chinese medicine. By chance, he became a teacher in an extracurricular tutoring class. The film mainly records his happy time in the tutorial class with students, as well as a secret story buried in his heart.