When I was young, I had two childhood sweethearts, one was Sang Huai and the other was Fen Nian. Sang Huai had a bad temper and always liked to fight, but fortunately Sunny was cheerful and there was no difficulty in defeating him. He's the school gangster type. But Bian Nian is different. She has been a child of other people's children and has had countless certificates and countless trophies posted in her home since she was a child. Their intersection happened in an accident. Sanghuai's parents were involved in a car accident when their upper body slipped due to a landslide while they were out working. Sang Huai was so depressed that he dropped out of school and followed his aunt to G City, leaving Nian Pei in H City. Fan Nian has been studying hard and was admitted to the best university in G city to become an excellent doctor. The mulberry tree they planted together matured over and over again and they never saw each other again...