Li Bai, known as the cram school emperor, was expelled from the cram school he founded due to a scandal, and his wife Man'er filed for divorce. After years of hard work, looking back on his life, he remembered the person he least wanted to face, his father, Li Shihao... He is a legendary educator in Hong Kong. He established a "Da Di Primary School" in Ping O Bay, advocating alternative education, educating Li Bai and many students to live in the simple and primitive nature. Unfortunately, Li Bai is not proud of his father. He has lived in the countryside with Shihao since he was a child, like a wild child. In Shihao's mouth, Li Bai's mother turned out to be a big star! Once, Li Bai ran away from the city to find his mother, but of course he found that everything was just a lie. Since then, Li Bai decided to leave Ping O Bay, and later established a cram school kingdom with his good brother Yan Jiadong, embarking on a completely different path from Shihao.