Li Bai lived with Shihao in the countryside since he was a child, like a wild child. According to Shihao, Li Bai's mother turned out to be a big star! By chance, Li Bai went to the city to look for his mother, but of course he found out that everything was just a lie. From then on, Li Bai decided to leave Pingao Bay, and later established a tutoring kingdom with his good brother Yan Jiadong, and embarked on a completely different path from Shihao. Now, both career and family suddenly collapsed, and Li Bai returned to Pingao Bay, unexpectedly, Shihao directly asked him to be the vice principal. In this way, facing different educational problems, Li Bai started one after another, a unique class. In the process, Li Bai gradually integrated into rural life, and cultivated a good relationship with every student as both a teacher and a friend. Li Bai finally understands Shihao's educational philosophy: "Life itself is the best education lesson."
Ten-year-old Kwong is a Primary 5 student who has to contend with "Internal assessment for Secondary Places" and parents who constantly argue. He is at a loss. His grandma, who lives alone, is always patient and happy to learn about his world. Grandma passes away suddenly, Kwong suffers from insomnia. At night, when he looks at the boundless sky, he feels secure, as if many friends are talking to him. He keeps all this to himself. To his parents, Kwong is just a naughty boy. They have no inkling that Kwong may be experiencing emotional problems.