As the times shift, the real estate industry falls into a slump. The civil engineering and construction sector, once a race to get into, faces a harsh winter, while the internet's rapid growth sharpens all kinds of divisions. Lin Wei, a poor girl, and Qin Yuan, a rich girl, meet just before the downturn. The differences in their upbringings show in every aspect of work and life, yet amid their disagreements and mutual admiration, they gradually become close friends.
When change arrives, Lin Wei, burdened by an enormous mortgage, wavers between holding on and changing course, while Qin Yuan has planned her next move well in advance. Neither could have imagined that their lives would turn upside down once again. Qin Yuan's family is struck by disaster, while at Lin Wei's most difficult moment, a grateful crowd presents her with a banner, and a one-trillion-yuan national debt project comes her way...