The novel tells the story of a girl named Xiao Lei who started in middle school. She has a strong and stubborn personality, but she is fragile and carries a heavy body to climb to the top. The people around her each have their own unique life and dance steps, including her extraordinary competitor and her best friend Lan Yi; The boss who can't figure out the bottom line is Wen Weiqi, the squad leader; Han Yi, a scholar who never knows how to pursue ordinaryness as his trademark; Lu Shuohui, a sultry man who is dedicated to being the only one; scheming and optimism contradict each other, just like the female version of Wen Weiqi... There is also a "patron saint" who is as carefree as a playboy. In this era of rapid development, they are one of the mainstream. When they step into society and touch the times, it is their little era of real "change"...