The day his mother slapped me, I realized how strong he was at 23. It takes the relationship between a sister and a brother who are 15 years apart as the main line, and revolves around the emotional journey of the female protagonist Lin Wan (a corporate executive, divorced and raising a child) and the male protagonist Shen Xingci (a recent graduate, part-time group broadcaster), integrating family resistance, career troubles and other plots to show a love story intertwined with love and hate.