Love Story with Mr. Chestnut

Mo Tanglin, a history teacher who was single for 24 years, bravely pursued love in college, but was rejected by his unrequited love senior. From then on, he was full of expectations for love but lacked confidence and bravery. People were passing by in a hurry, but it was difficult to chase his lover. There were so many couples around him that singles could only heal themselves. Until one day, Mo Tanglin met Lu Zeli, the overbearing general manager who was aloof and arrogant because of his status as an "illegitimate child". She knew it was impossible so she didn't dare to approach him. He had already become numb after losing his lover of ten years. But fate keeps him and her getting closer. How can they get rid of their inner demons, overcome the obstacles of reality, and love each other bravely...