Lou Yaoming (Wang Haoxin) has just broken up with his girlfriend and lost his job. His only place to live is rented out by his girlfriend to a piano teacher named Cai Jianjing (Li Shihua). With nowhere to go, Lou Yaoming is forced to agree to Cai Jianjing's harsh demands in exchange for the qualification to share a house with her. At first, the two people with completely opposite personalities often quarreled fiercely. However, as time went by, Lou Yaoming gradually discovered the soft and injured heart hidden behind Cai Jianjing's layers of armed appearance. Lou Yaoming couldn't help falling in love with Cai Jianjing, who was tough on the outside but soft on the inside. Lou Yaoming found a new job and met his intern Zhu Biji (Chen Lixiang). Zhu Biji fell in love with the steady and reliable Lou Yaoming, but he already had someone in his heart.