The Liu family and the Li family, who live in the same courtyard, are constantly at war. The root cause of the grievances between the Liu and Li families lies in their parents, Liu Xiufeng and Li Dalong. The two have been quarreling over an old incident for nearly thirty years, and other people in the family have also been involved in the dispute. Liu Jixiang, the daughter of Liu Xiufeng, and Li Chengtong, the son of Li Dalong, studied in a foreign country and became lovers. However, they had no choice but to turn to an "underground love" after returning to China. There were constant turmoil between the Liu and Li families. Their relationship finally came to fruition after many tests including the opposition of their parents, Liu Jixiang's sister Liu Meili's "love-taking", the temptation of Li Cheng by his secretary Lu Na, and the harassment of Liu Jixiang by his boss Wei Dahai. The grievances between the Liu and Li families were completely resolved. From then on, they lived in harmony and everything prospered.