"Sweet and Sour" tells the story between two high school girls. Tian Dingding is an ordinary and innocent girl who firmly believes in the existence of love and friendship and will do anything for the sake of friendship. Lin Zhi is an top student, a beautiful girl who is favored by thousands of people, but her life experience is pitiful. She lives with a despairing mother and an angry stepfather, and has to rely on her own means to win everything. Lin Zhi met her childhood friend Zhou Chumu by chance. She was attracted by Zhou Chumu's unruliness and gentleness, and fell into a reckless love. For Zhou Chumu, she skipped classes, accompanied her to drinks, stole money, and even took advantage of her best friend's farmland. Tintin. Tian Dingding was willing to pay for his good friend without any suspicion of being taken advantage of. Until Lin Zhi became pregnant and had an abortion, it seemed that all the secrets could no longer be concealed...