S1, F1: Geology PhD Su Jishi is informed by her twin sister, Su Jin Qing, that their actress sister, Su Jin, has run away due to work pressure. To prevent severe consequences, Fang Jie convinces Su Jishi to temporarily replace Su Jin in the entertainment industry. At a dinner with entrepreneur Mu Xiulun, Mu unexpectedly proposes to Su Jin, but Su Jishi, unaware of the situation, declines.