In the 1990s, Qiushui, a young literary man, followed his parents' wishes and entered the medical school. He met Xiaohong and Zhao Yingnan, who had completely different personalities but loved him equally. Faced with the pursuit of the two girls, Qiushui chose Zhao Yingnan, whom he thought he should like, but Xiaohong always lived in his heart; during the seven years that Qiushui and Zhao Yingnan were dating, Xiaohong always stayed by Qiushui's side. When he was about to graduate, Qiushui, who was obsessed with literature, was criticized by Zhao Yingnan for not doing his job properly, and the two gradually drifted apart; but Xiaohong understood Qiushui, appreciated his literary talent, and was Qiushui's soul mate.