Ma Liwen (played by Chen Jianbin) is a watcher of a physical bookstore. His dream is to open a physical bookstore so that people in the city can have a place where they can calm down and enjoy the pleasure of reading. Therefore, he is willing to sacrifice commercial profits to protect his spiritual home. Out of responsibility, he takes care of his ex-wife Wang Yiru (played by Liu Weiwei) who suffers from bipolar disorder, and the appearance of family teacher Jian Dan (played by Mei Ting) brings a touch of comfort to his life. Jian Dan was originally a middle school teacher. She resigned from her teaching position and came to Beijing to marry her fiancé Feng Chunsheng (played by Tu Songyan), but was betrayed. Jian Dan bravely rejected the marriage of compromise under Ma Liwen's suggestion, and developed an inexplicable affection with Ma Liwen. Ma Liwen's complex family relationship made the two restrain each other even though they had a mutual understanding. At this time, Ma Liwen's ex-wife came back from illness and wanted to remarry. Faced with responsibility, love and a precarious career, Ma Liwen did not choose to escape. He decided to hold Jian Dan's hand and face it together. In the end, he overcame the difficulties, realized the dream he had been watching, and gained success. It is actually very simple to feel happy.